LoggerFlex FAQ: Data Loggers, Alarms & Setup

Products and choosing a logger

What is LoggerFlex, and can I buy direct?

LoggerFlex is a Canadian manufacturer of wireless environmental data loggers, founded in Vancouver in 2017, with more than 50,000 devices deployed worldwide. The loggers track temperature, humidity, CO2, pressure, current, light and flow, and LF Cloud calls, texts or emails you the moment a reading drifts out of range. All monitoring data is held in Canada. LoggerFlex sells through authorized distributors, not direct to the public, and hardware is configured and quoted per application rather than priced on the site. Use the distributor map to find your local partner, or contact us and we will route you to one.

What is the difference between the EDGE and BLOCK families?

EDGE is the sealed, display-equipped line: ambient temperature and humidity, external probes down to -55 C, CO2, plus pharmacy and in-transit variants. Every EDGE unit has an on-screen display, an audible buzzer and a visible on-device alarm, and most models come in matched WiFi and cellular pairs. BLOCK is the industrial and retrofit line: one compact WiFi housing with sensor ports for fluid pressure, current clamps, pulse counting, 4-20 mA loops, differential pressure and light. The principle is swap the probe, not the device, because calibration lives with the plug-in sensor, so recertifying means a new probe rather than an RMA.

Should I specify WiFi, cellular, or an NFC tag?

WiFi models join your existing 2.4 GHz network with no gateway or hub to buy, and live monitoring, alarms and the last 45 days of history stay free for the life of the device. Cellular models carry a built-in global eSIM that works in 170+ countries with no SIM card and no carrier contract; year one is included, then CAD $36 per device per year covers the data plan and Premium cloud, billed by LoggerFlex directly. Cellular units also accept WiFi and roll over automatically. NFC tags are single-use shipment loggers with no live link, read by phone on arrival.

What are the EDGE variants and what does each one add?

Essential logs ambient temperature and humidity at ±0.2 C. Essential PLUS adds one external temperature and humidity probe so the measurement point sits away from the logger. Thermo ships with two detachable digital probes covering -55 C to +125 C for freezers and cold rooms. Pharma ships with two NIST-traceable probes rated -20 C to +50 C. Air adds CO2 alongside temperature and humidity. EDGE Lite is a compact min/max WiFi thermometer reading ambient temperature and one external probe at ±0.5 C. GEO adds LTE with GPS tracking for shipments in transit. Most variants come in matched WiFi and cellular pairs.

What can the BLOCK models actually measure?

BLOCK models share one WiFi housing and differ by what plugs into the ports. BLOCK Essential logs ambient temperature and humidity with leak and door-contact inputs. External Temp and THERMO II take one or two detachable probes for -55 C to +125 C. The rest measure CO2, barometric pressure, differential pressure for cleanrooms and filter loading, fluid line pressure and temperature, light intensity, motor and compressor current through a split-core clamp, dry-contact meter pulses, and any industrial 4-20 mA transmitter. Every BLOCK also reports its own ambient temperature and humidity.

Which logger do I specify for a vaccine fridge or a pharmacy?

Specify EDGE Pharma, in WiFi (edwiph) or cellular (edclph). Each unit ships with two NIST-traceable probes rated -20 C to +50 C, so one device covers two monitored points, and an ethanol-buffered probe mimics actual product temperature so routine door openings do not raise false excursions. The calibration certificate belongs to the probe, not the device: look it up by its 16-character ID or QR code, and renew by plugging in a newly calibrated probe. Certificates are valid three years in use, or five years on the shelf.

Do you make anything beyond loggers — meters, gateways, handheld probes?

Yes. The Cellular Water Meter is an ultrasonic meter with its own 4G modem and managed SIM, so there is no gateway and nothing to pair; your distributor links it to your account. The BLOCK WiFi Water Meter reports flow and consumption over your own 2.4 GHz network. MODGATE brings Modbus RTU and TCP equipment registers into LF Cloud, and the LF M-Bus Cloud Bridge reads wired M-Bus utility meters. The CORE probe spot-checks food core temperature, Agrimax reports soil moisture, temperature and conductivity, and LoggerFlex Halo shows live conditions on a round display at the point of use.

How do I work out which model my application needs?

Start from the application, not the part number. Each solution page — pharmaceutical, food safety, cold chain, industrial, agriculture, utility sub-metering, property management, preservation, HVAC and temperature monitoring — names a working configuration, and most product pages carry a datasheet you can download. If you would rather have it specified for you, talk to an engineer: tell us the space, the range you have to prove, whether site WiFi reaches the measurement point, and how many points you need. We recommend the exact configuration, send the datasheets, and quote it through your local authorized distributor.

How many models are there, and where is the full catalog?

The catalog runs to 31 products: 12 EDGE models, 11 BLOCK models, two water meters, two protocol gateways, the CORE handheld probe, the Microthermo NFC tag, the Agrimax soil sensor and the Halo room display. The products page lists every one with its sensors, connectivity and headline specs, and the datasheets page carries downloadable spec sheets in English and French. No list prices are published: LoggerFlex is a manufacturer, so hardware is quoted per configuration, directly or through the distributor who will supply and support it.

Cloud, data and subscription

Do we need a subscription to use LF Cloud?

No. Monitoring and alarms run on a free-forever tier on every device: live readings, alarms by email, SMS and phone call, and the last 45 days of history. Every device also includes its first year of Premium Access — EDGE Lite gets two months, and is the one model that stops alarming if Premium is not bought. After the included period Premium is CAD $24 per device per year, optional on Wi-Fi devices; cellular devices renew instead through the CAD $36 per device per year connectivity fee, which bundles Premium and is required to stay online. LoggerFlex bills these subscriptions directly.

What is in the free tier, and what does Premium Access add?

The free tier covers live monitoring, the full alarm engine, on-device alarms and the most recent 45 days of history, for the life of the device. Premium Access adds unlimited history, scheduled exports, 2,000 API calls a year, and the ability to share a device with new users. Nothing stops recording or alarming without it: you see 45 days instead of the full record, and you cannot invite new people, though anyone already shared on the device keeps their access. Premium is bought per device, not per site and not per user.

Why do cellular units carry a yearly fee when Wi-Fi units do not?

A Wi-Fi device rides the customer's own network, so there is nothing to pay for connectivity. A cellular device carries a built-in global eSIM with an unlimited data plan across 170+ countries, no SIM card to fit and no carrier contract, and that plan has a cost. Year one is included. From year two it is CAD $36 per device per year, which bundles Premium Access with the data plan, and it is required to keep the device connected. Cellular units can also join Wi-Fi and roll over between the two automatically.

What happens if Premium Access lapses?

The device rolls down to the free tier automatically. It keeps recording, keeps alarming and stays on the dashboard; history is trimmed to the last 45 days and no new people can be invited, while anyone already shared keeps access. Premium can be bought again at any time from the My Credit section of My Profile, and the older records become visible again. Two exceptions matter: a cellular device needs its connectivity renewal to stay online at all, and EDGE Lite stops sending alarms entirely without Premium. Subscriptions run to their last valid date and are not refunded.

Is EDGE Lite handled differently on subscription?

Yes, and it is the one model where letting the subscription go has a hard consequence. EDGE Lite ships with two months of Premium Access, not twelve, and a $1 initial alarm credit rather than the usual $5. If Premium is not purchased when that window ends, the unit stops sending alarms completely — it does not fall back to free alarming the way every other model does. Build the renewal into any EDGE Lite quote, and tell the end customer before the device goes into a freezer or a vaccine fridge.

How are SMS and phone-call alarms paid for?

Email alarms are free and unlimited to every recipient the device is shared with. Text messages and automated phone calls draw on a prepaid credit held per device. Each device starts with $5.00 of credit, which at Canadian and US rates is roughly 250 SMS at $0.02 each or 100 calls at $0.05 each. Rates follow the recipient's country code, and the credit is shared across all recipients on that device. Top it up under My Credit in My Profile. Running out never stops email alarms, recording or the dashboard.

Where does our data live, and how is it protected?

All monitoring data is hosted on Canadian infrastructure, so you get full Canadian data residency — often a deciding factor for health authorities, pharmaceutical, government and food-safety buyers with strict data-handling rules. The platform uses TLS 1.3 encryption with role-based access, daily backups with multiple redundancies, and tamper-proof audit logs that record every alert and every action. Records are written to support FDA 21 CFR Part 11, NSF/ANSI 456 and HACCP workflows. If a tender asks for residency or audit-trail evidence, ask your distributor or email support@loggerflex.com.

Is LF Cloud an app we have to install?

No. LF Cloud is a progressive web app: it runs in any browser on a phone, tablet, laptop, desktop or smart TV, recognises the device and lays the dashboard out to suit it. There is nothing to download from an app store and no client software for IT to approve. The interface runs in 24 languages with auto-detection and handles multiple time zones, so readings and alarms appear in each user's local time. LoggerFlex does publish one native app, the NFC tag reader on the App Store and Google Play, but it is separate from the dashboard.

Can we get the data out and into our own systems?

Yes. Reports export as PDF, Excel or CSV and can be scheduled for automatic email delivery, so a compliance file lands in an inbox without anyone signing in. For integration, LF Cloud exposes a documented REST API — pull historical or latest readings, and register and configure devices programmatically — plus outbound webhooks that post each new reading to an endpoint you control, for SCADA, BMS, ERP or a custom service. Premium Access includes 2,000 free API calls per year. Credentials and endpoint specs are issued per account once an integration is scoped, so talk to an engineer to start.

Can several people share one device with different permissions?

Yes. Sharing is per device, by email invitation, in five roles: Owner (full control, including deleting the device or transferring ownership), Editor (change settings and thresholds and view data, but cannot delete or transfer), Viewer (read-only), Silent Viewer (read-only with no alarm notifications) and Service & Maintenance, which lets a technician file service reports. Each person needs their own free LoggerFlex account and sets their own phone number and notification preferences; email notifications are always on. Adding new people requires Premium Access, though anyone already shared keeps access.

Setup and connectivity

What do I need before I install a logger?

A free LF Cloud account and the device label. Go to app.LoggerFlex.com, create and verify the account, then add the device using its Serial Number and DUID. On EDGE you can scan the QR on the display to fill both in; on BLOCK they are printed on the label at the back; on CORE, press the gear button and they appear on screen for three minutes. The registration wizard sets the recording interval, syncing interval and alarm thresholds and pushes them down on first connection. Register before setup — on BLOCK, before you even power the unit.

How do I connect a logger to Wi-Fi?

Register the device first, then press the SETUP button — the right button on EDGE, the top button on BLOCK. The logger raises a temporary Wi-Fi network called Datalogger. Join it from a phone, tablet or laptop. A setup page opens on its own; if it does not, browse to 8.8.8.8. Pick your 2.4 GHz network, type the password and connect. The device then pulls its logging settings and thresholds from LF Cloud. Press SYNC — left button on EDGE, bottom on BLOCK — to force an upload and confirm it is online.

What are the network requirements for a Wi-Fi logger?

2.4 GHz only — 5 GHz is not supported. That is deliberate: 2.4 GHz carries further through concrete and steel, which is what industrial sites are made of. The network must use a WPA or WPA2 pre-shared key and hand out addresses by DHCP; static IP is not supported, and the password is case-sensitive. The device cannot join a network with a captive portal or a secondary login page, which rules out most guest, hotel and campus SSIDs. Dual-band routers and mobile hotspots are fine as long as a 2.4 GHz SSID is reachable.

Do I need a gateway, hub or bridge?

No. Every EDGE and BLOCK unit reaches LF Cloud on its own — BLOCK and Wi-Fi EDGE models over your existing Wi-Fi, cellular EDGE models over their built-in modem — so there is no proprietary gateway to buy, mount or maintain and no IT project to schedule. The cellular water meter works the same way, with its own 4G modem and managed SIM. EDGE also broadcasts Bluetooth for local viewing, and that is the single exception: a LoggerFlex gateway is needed only to capture BLE data. Logging, alarms and cloud reporting all work without one.

Do cellular units need a SIM card or a carrier contract?

No. The modem uses a built-in global eSIM — nothing to insert, no carrier agreement to sign. It registers on the best available network in 170+ countries with no roaming cost. Register the device, press SYNC, and it connects on its own. Cellular units can also join Wi-Fi and roll over between the two automatically in both directions, so you keep coverage if one path drops. Connectivity is CAD $36 per device per year from year two and is required to keep a cellular unit online; year one is included, and LoggerFlex bills it directly.

How quickly does data reach the dashboard?

Two independent clocks run. The recording interval decides how often the device measures and stores a reading locally; the syncing interval decides how often it uploads. A device can look quiet simply because its next scheduled upload has not happened yet. Alarms bypass the sync clock entirely — a threshold breach forces an immediate sync, drops recording to once a minute and sounds the buzzer for five seconds. Shortening the sync interval does not make alarms faster, it only costs battery. EDGE units left on USB-C power sync every 15 minutes.

What happens if the internet drops — do I lose readings?

No. The logger keeps measuring and stores every reading with its timestamp in internal memory, then uploads the whole backlog automatically the next time it connects, so the history closes with no gaps. If a scheduled upload is missed, LF Cloud sends a Missing Upload email so you know a device has gone quiet. One caution for sites with poor coverage: an alarm raised while the device is offline makes it retry repeatedly and drains the batteries fast, so use Battery Saving sync mode and leave alarms off where you are logging without a connection.

How do I start an NFC Microthermo tag?

Press the tag's power button three times within two seconds; a red flash lasting three seconds confirms it is armed. The tag then waits 10 minutes before its first reading, which is your window to get it into the shipment or the cold room. It records every 10 minutes, holds 4,000 records — roughly four weeks — and overwrites the oldest once full. Battery life is two to three months. To read it, install the free LoggerFlex NFC app and enter an email already registered on a free LF Cloud account; the app itself has no login.

My CORE probe connected but will not take a reading. Why?

Almost always because the account has no ingredients. CORE needs at least one virtual measurement point — in LF Cloud press the + button, then click Add a virtual measurement point near the bottom of that same pop-up, and name the ingredient. Without one the probe connects and then has nothing to measure against. Two other CORE-specific points: its setup hotspot is named CORE, not Datalogger, and the Serial and DUID shown by the gear button stay on screen for only three minutes. The display sleeps to save power, so press any button to wake it.

How is the cellular water meter commissioned?

There is nothing to pair or configure on the meter itself. A licensed plumber fits it: flush the line first, point the flow arrow the way the water runs, mount it horizontally with the display up, and fit a strainer, shut-off valve and check valve upstream. Use PTFE tape or approved paste, never hemp rope — loose strands clog the meter. Check the SIGNAL screen for bars before you close the pit, because a metal lid or a deep vault blocks the modem. Your distributor or utility links the meter to your account; you sign in and it is already there.

Battery and power

How long do the batteries last?

Up to 3 years on 4 AA batteries, using a power-management architecture protected by US Patent US11455877B2. That is the rated figure published for the EDGE Wi-Fi loggers, and BLOCK is specified at up to 36 months on cells. EDGE units with an E-INK display typically run two to three years in the field, and EDGE Lite is rated up to two years. Real-world life depends on your recording interval, sync interval, alarm activity, signal quality and ambient temperature, so we size it against your actual deployment.

What actually shortens battery life on site?

Four things. Recording and sync intervals: logging every minute and uploading every hour drains far faster than the defaults. Alarm activity, because every transmission powers the radio. Weak Wi-Fi signal, which forces the device to retransmit packets. And temperature, since extreme cold or heat reduces cell efficiency. Leave the default intervals alone unless you have a reason to change them. A shorter sync interval does not make alarms arrive faster, because an out-of-range reading never waits for a scheduled upload.

Can I run a logger on mains power instead of batteries?

Yes. EDGE Essential, Thermo, Pharma and Air run on 4 AA cells or USB-C 5 V and switch automatically based on what is available, so the cells become backup rather than the primary source. BLOCK is offered with a USB-C power option as well. One behaviour worth knowing: while an EDGE unit is plugged in it drops its sync interval to 15 minutes automatically, so your chart fills in through the day instead of once at the scheduled send. Alarm speed is unchanged either way.

If the building loses power, does monitoring stop?

No. The logger switches to its AA batteries and keeps recording and alarming. It reports the cut at its next scheduled save and sends a second message when power comes back; both arrive by email and text. The catch on a Wi-Fi unit is the network, not the logger: a mains cut usually takes the router down too, so nothing leaves the building until it returns. A cellular unit has its own connection and is unaffected. On EDGE Essential, Thermo, Pharma and Air, power loss and restoration are also alarm triggers alongside your high and low limits.

Will I be warned before the batteries go flat?

Yes. The cloud emails a low-battery alert while there is still life in the cells, not once they are dead. Separately, if a device misses a scheduled upload you get a Missing Upload email, which catches a flat battery, a dead router or a unit someone unplugged. EDGE also shows battery level and external-power status on the device display, and the app carries a battery icon for each device. Email alerts are free and unlimited; routing them to SMS or a phone call draws on the device credit.

Which AA batteries should I fit?

On 4 x AA models, any good-quality alkaline works. Older BLOCK hardware built with only two battery slots is the exception: those units require Energizer Lithium Ultimate AA cells, and standard alkalines will not hold them up and deplete rapidly. For maximum runtime on any model, and especially in cold rooms and freezers, lithium cells are the better choice. Change all cells at the same time with fresh ones so the pack stays balanced, and never mix old and new. If you are unsure which hardware revision you have, ask your distributor.

Does a freezer or cold-room install shorten battery life?

Yes, to a degree. Extreme cold and extreme heat both reduce cell efficiency, so a unit logging inside a deep freezer will not match a bench figure. Keep the device inside its stated operating range, use lithium cells where you can, and where the enclosure allows it mount the logger outside the cold space on an external probe. One thing that is not a fault: the EDGE display pauses updates below 0 C to protect the screen, so a static display in a freezer is normal and the device is still recording.

Our site has patchy coverage. How do we stop the batteries draining?

Set the Syncing Interval to Battery Saving Mode, and if you are using the device purely as an offline logger, leave alarms switched off. An alarm raised while the device is offline makes it retry the sync and the notification repeatedly, which flattens the cells fast. You lose no history by syncing less often: the device keeps recording to internal memory with timestamps and uploads the whole gap automatically the next time it connects, so the record is reconstructed without holes.

Do the water meter and the NFC tags use AA batteries like the loggers?

No, neither takes AA cells. The Cellular Water Meter carries a sealed 3.6 V lithium cell rated for more than six years. It is not user-serviceable: when the meter raises its E1 low-battery code, a professional replaces it, because the housing has to stay sealed and you should never open it yourself. The Microthermo NFC tag runs about two to three months once activated, with a one-year shelf life before activation. It is a single-use tag, so there is nothing to charge or replace.

Can I get a battery-life figure for my exact configuration before I order?

Yes, and it is the right way to specify a fleet. Rated life is a function of your recording interval, sync interval, alarm rate, radio type, signal strength and temperature, so a single headline number tells you little on its own. Send those settings, the environment and the number of monitoring points to your authorized LoggerFlex distributor, or talk to an engineer through the contact form, and you get a recommended configuration with an expected runtime attached. Hardware is configured and quoted per application rather than sold from a list.

Alarms and alerts

How will I be alerted if a reading goes out of range?

LF Cloud dispatches an automated phone call, an SMS and an email at the same time, to an unlimited number of recipients. Alarms cascade down your contact list until someone acknowledges, so an excursion calls your phone day or night. EDGE models with a display also raise a local alarm, an audible buzzer and a visual alert on the screen, so staff on site see it even if nobody is looking at a phone. On cellular units the built-in eSIM keeps alarms going out when your Wi-Fi drops.

Can I send alerts to more than one person?

Yes, to an unlimited number of people. Each recipient needs their own free LoggerFlex account and the device shared with them, because sharing is how someone becomes an alarm recipient. Adding new people requires Premium Access; on the free tier existing shares keep working but you cannot invite more. Each person manages their own phone number and notification preferences under Alarm receivers in My Profile, and email is always on. If someone should see the data but never be paged, share the device with the Silent Viewer role.

Will I get flooded with false alarms every time a door opens?

No. LF Cloud runs a four-level alarm engine. Level 1 is an instant alarm the moment a reading crosses your min or max. Level 2, Persistent Condition, only fires if the reading stays out of range for a number of consecutive readings you set, which filters out door openings and defrost cycles. Level 3 is a Time-Weighted Average for long-term exposure. Level 4 is Trend Drift Detection, comparing against historical baselines to catch slow degradation. You can also set a global alarm trigger delay and require all or any parameters to be out of limits.

Do the text and phone alerts cost anything?

Email alarms are free and unlimited. SMS and automated calls draw on a prepaid alarm credit held per device. Every device ships with an initial $5.00 alarm credit, which at Canadian and US rates is roughly 250 texts at $0.02 each or 100 calls at $0.05 each. The per-message cost varies with the recipient's phone country code, and the credit is shared across all recipients on that device. If it runs out, texts and calls stop while email keeps working. You top up under My Credit in My Profile; LoggerFlex bills this directly.

Will I know if a device stops reporting or loses power?

Yes. Turn on the No Connection Alarm in the device settings and LF Cloud notifies you when a device has not uploaded within the window you set. A missed scheduled upload also triggers an automatic Missing Upload email, and low-battery and external-power-change alerts are sent by email. EDGE units switch automatically between USB-C and their 4 AA cells, so they keep logging and alarming through a power cut. One caution: at a site with poor coverage an alarm raised while offline makes the device retry repeatedly and drains the battery, so use Battery Saving sync there.

Is there an audit trail of who responded to an alarm?

Yes. Every login, parameter change and alarm acknowledgment is written to a timestamped Activity Log that users cannot edit or delete, the immutable record FDA 21 CFR Part 11 and HACCP corrective-action documentation expect. The log sits on the device attributes page alongside Service History and Maintenance Report. An alarm does not quietly clear itself either: the device stays in active tracking, measuring every minute, until readings actually recover. Readings and alarm acknowledgments export together as a signature-ready PDF, or as CSV, for any date range.

What does an EDGE unit actually do at the moment an alarm fires?

It stops waiting for the next sync. The device wakes, connects and sends the alert immediately, shortens its recording interval to one minute, sounds the buzzer for five seconds, and enters active tracking, measuring every minute and uploading hourly until conditions recover. The screen shows the NSF/ANSI 456 visual alarm indication. Tap the middle button to snooze the buzzer; the buzzer itself can be toggled from the app. A long syncing interval does not slow an alarm down.

Can it alarm on a door left open or a water leak?

Yes, through the dry-contact digital input on Port II, which every EDGE and BLOCK logger listed here carries. Wire in a magnetic door switch, a fridge alarm relay or any open/close contact and it alarms like any other parameter. For water, the flood detector kit is a leak-sensing cable sensitive along its entire length, extendable to 100 m, landing on the EDGE digital input or on the flood-detector port of the BLOCK models that have one. Both cables are optional accessories, not in the box, so ask your distributor to quote them with the loggers.

Can I alarm on cumulative exposure instead of a single spike?

Yes. The Long-Term Exposure Alarm lets you define rules on intensity and duration together, and it fires on a time-weighted average rather than an instantaneous reading. That is level 3 of the alarm engine. Use it for Mean Kinetic Temperature in pharmaceutical storage, and for CO2 exposure limits in ventilation compliance, where an eight-hour average matters more than a brief peak. EDGE Air pairs it with unlimited alarm rules, and the MKT figure also appears in the compliance reports.

Do I need a paid plan to keep receiving alarms?

No. Live monitoring and alarms sit on the free tier for every device, for life. Premium Access buys unlimited history, advanced reports, scheduled exports, API access and device sharing, not alerting. Two exceptions. Cellular units need the connectivity service, CAD $36 per device per year from year two, to stay online at all. And EDGE Lite ships with only two months of Premium and $1 of alarm credit; if Premium is not purchased it stops sending alarms altogether. Premium Access is CAD $24 per device per year, with the first year included.

Accuracy, calibration and compliance

How accurate are LoggerFlex loggers, and will they hold up in a regulated environment?

Accuracy is stated per model on that model's datasheet rather than as one site-wide figure, and the internal sensor and the external probes are rated differently. EDGE Essential reads ambient temperature to ±0.2 °C and humidity to ±1.8%. External digital probes are rated ±0.5 °C across −55 °C to +125 °C, with NIST-traceable versions wherever a certificate is required. Every reading is timestamped at the device and written to an immutable, audit-logged record in LF Cloud, so an auditor reviews the measurement chain itself rather than a re-keyed paper logbook. Datasheet PDFs are published in English and French.

How do the NIST calibration certificates work?

The certificate belongs to the sensor, not the device. Each probe carries a 16-character identification number and a QR code. On the LF Cloud sign-in page, click Calibration Certificate Lookup and enter that number, or scan the QR code with a phone camera. No login is required, so an inspector or auditor can verify a probe independently of your account. The lookup returns the certificate's issue date and current status, Valid or Expired, and downloads the full PDF covering the calibration procedure, measurement uncertainties and traceability to national standards.

How long is a NIST certificate valid?

Three years in use, or five years on the shelf. The two figures are different and the distinction matters: five years applies to a probe still in its packaging, while the clock that governs a deployed fridge, freezer or cold room is the three-year in-use life. LF Cloud tracks the status, shows Valid or Expired in the certificate lookup, and emails a reminder before it lapses. EDGE models with a display also show NIST status on-screen with a 60-day countdown as expiry nears, so the person standing at the unit can see it without opening the dashboard.

Do I have to ship the device back to have it recalibrated?

No. Because calibration lives with the sensor, you replace the probe rather than the logger. Order a newly calibrated probe from your distributor, unplug the old one and plug the new one in. There is no RMA and no lab shipment, which is how the swap avoids monitoring downtime and keeps renewal costs low. Because LF Cloud flags an approaching expiry, a probe swap can be scheduled into a planned maintenance visit rather than handled as an urgent job after a certificate has already lapsed.

How many sensors on one device can carry a certificate?

EDGE supports optional NIST-traceable certificates for up to two external sensors per device, and EDGE Pharma ships with two NIST-traceable probes as standard. That covers two measurement points inside one unit, or a vaccine fridge plus a second refrigerated space. Do not assume a pharmacy freezer: the Pharma probe reads down to −20 °C, and a freezer that runs colder needs a different probe, so talk to us before you specify one. Each probe's certificate is looked up by its own 16-character ID, so probes are tracked and replaced independently.

What is the difference between the Pharma probe and the standard external probe?

They are not interchangeable. The NIST-traceable Pharma probe is a narrow-range probe starting at −20 °C, shipped in pairs with EDGE Pharma and sized for vaccine and pharmacy refrigerators; take its exact upper limit from the EDGE Pharma datasheet. The standard external digital probe used on EDGE Thermo and the probe-equipped BLOCK models covers −55 °C to +125 °C for freezers, cold rooms and process work. Both are rated ±0.5 °C. Pharma copy also describes an ethanol-buffered probe that tracks product temperature rather than air, so routine door openings do not raise false excursions.

Which compliance frameworks does LoggerFlex support?

The platform is built for FDA 21 CFR Part 11, NSF/ANSI 456, HACCP, and GxP, GMP and GDP workflows, and it is deployed against CDC/VFC vaccine-storage guidance and Health Canada requirements. Records are cryptographically signed and immutable, tamper-proof audit logs record every alert and every action, and HACCP corrective-action logs are generated alongside the reports. The hardware meets FCC, IEEE 802.11 b/g, RoHS and CE EN 61326-1. All monitoring data is hosted in Canada with Canadian data residency, over TLS 1.3 with role-based access.

What reports can I produce for an inspection or an audit?

Two suites. Sensor reports cover food safety and health service records formatted for inspectors, transport and logistics logs with GPS mapping, temperature mapping across multiple sensors, min/max/average and peak points, VPD, light intensity, multi-sensor consolidation, and raw hourly readouts. Meter reports cover consumption and billing, energy trend and peak analysis, per-phase power breakdown and power quality. Mean Kinetic Temperature is calculated automatically within the reporting suite, which is what pharmaceutical storage audits ask for. Reports export to PDF, Excel or CSV and can be scheduled for automatic email delivery.

Where do I get replacement probes and warranty support?

Through your authorized LoggerFlex distributor. Distributors carry genuine NIST-traceable devices and calibrated replacement probes, hold local stock, and handle warranty work under the two-year limited warranty that covers every LoggerFlex product. If you do not have a distributor yet, use the distributor map to find one in your region, or contact us and we will route you to the right partner. For a technical question about a certificate or a reading, email support@loggerflex.com or call +1-888-365-8880.

Buying through distributors

Where can I buy LoggerFlex hardware?

LoggerFlex is a B2B manufacturer and sells through authorized distributors. There is no online store, cart or checkout on loggerflex.com. Open the distributor map on the Where to Buy page, find the partner covering your region, and they quote, supply and support the hardware locally. If you are not sure who covers you, or you want the configuration specified first, use the contact page to request a quote or talk to an engineer. We will recommend the exact configuration, send the datasheets, and route the order to your local distributor.

Why are there no prices on the website?

Because hardware is configured per application and sold through partners. LoggerFlex quotes hardware rather than pricing it on the site, so what you pay depends on model, probe count, connectivity, calibration certificates and quantity, and on the terms of the distributor supplying you. Distributors hold local stock and provide support, and they quote the hardware. The only figures published on loggerflex.com are LF Cloud subscription fees, which LoggerFlex bills directly. For hardware pricing, ask your distributor or request a quote through the contact page.

What currency are quotes in, and how are taxes and duties handled?

Your distributor handles all of it. Quotes are issued in the currency of the distributor's region, and sales tax, duties and customs appear on their invoice rather than ours. The subscription figures published on loggerflex.com are in Canadian dollars. Hardware is designed and built in Canada; your distributor confirms duty and customs handling for your market. Purchase orders, net terms and accepted payment methods are set by the distributor you buy from, so confirm them on the quote before you release the order.

Is there volume or partner pricing?

It is settled in the quote. Volume, configuration and program tier are agreed per order rather than published as a price list, and distributors and OEM customers have their own arrangements. There are no public discount codes or promotions on loggerflex.com. If you are buying at volume, standardising a fleet, or need a private-label or OEM build, use the contact page and ask for OEM or partner pricing; an engineer will spec the configuration and route it with the right commercial terms. Existing distributors should raise volume pricing with their Partner Success Manager.

Where do you ship, and how long does delivery take?

Through the distributor network, which spans Canada, the United States, Mexico, Europe, Australia and Asia. Distributors hold local stock, ship in-region and quote lead times for your order, so delivery dates come from them rather than from us. More than 50,000 LoggerFlex devices are deployed worldwide. Cellular models carry a built-in global eSIM that works in 170+ countries with no roaming cost, so a unit shipped into a new market connects without a local SIM or carrier contract. If no distributor covers your region yet, contact us and we will quote directly.

What warranty do the devices carry?

A two-year limited warranty against manufacturing defects, running from the date of shipment, on every LoggerFlex product. The warranty work is handled by the authorized distributor that supplied the device, so start there: they carry genuine, NIST-traceable LoggerFlex stock, hold local stock and provide the service. The Cellular Water Meter carries the same two-year term with one condition of its own — its lithium cell is sealed, so opening the housing or changing the battery yourself ends the cover. For anything else, contact your distributor, or email support@loggerflex.com.

How do returns and RMAs work?

Returns and RMAs run through the distributor that supplied the device. They raise the claim, handle the logistics and confirm the terms that apply to your order. Start with the product manual, and if the device is genuinely faulty, talk to an engineer through the contact page so the fault is diagnosed before anything ships. Note that calibration is not an RMA: NIST certificates are issued to the sensor, not the device, so you renew by plugging in a newly calibrated probe instead of sending hardware away.

Who bills the cloud and cellular subscriptions, the distributor or LoggerFlex?

The distributor invoices the hardware. LoggerFlex bills cloud and cellular subscriptions directly, so your partner never runs billing or cloud support. Every device includes a free tier for life: live monitoring, alarms and the last 45 days of history. Premium Access is CAD $24 per device per year, optional on Wi-Fi devices, and most devices include their first year; EDGE Lite ships with a two-month trial instead. Cellular service is CAD $36 per device per year from year two and bundles Premium with the global eSIM data plan; it is required to keep a cellular device connected. Subscriptions are non-refundable.

How do I order spare probes, accessories or NFC tags?

Through the same distributor, on the same quote. The public catalog lists loggers, meters, gateways and soil sensors; probes, flood-detector kits, sensor extensions, dry-contact cables and covers are specified with your configuration or ordered as spares, so give your distributor the part number of the device they fit. Replacement calibrated probes are the normal way to renew a NIST certificate, and they ship without taking the logger out of service. Microthermo NFC tags are single-use, so plan quantities per shipment and ask your distributor about order quantities and lead time.

We want to resell LoggerFlex. How do we become a distributor?

Apply through the Partners page. Applications are reviewed for regional fit, technical capability and support coverage, and distributor agreements are non-exclusive. LoggerFlex bills and supports all cloud and cellular subscriptions directly, so you earn on hardware and on the services you wrap around it without running billing or cloud support yourself. The program includes product and cloud training for your sales and service teams, a 24/7 knowledge base, joint sales calls, localized marketing assets, co-branded customer portals on your own domain, and a dedicated Partner Success Manager.

Warranty, service and support

What warranty comes with LoggerFlex hardware?

Every LoggerFlex product carries a two-year limited warranty against manufacturing defects, running from the date of shipment. Hardware is sold through authorized distributors, so the distributor who supplied your devices handles the claim and the service work. Contact them first — they carry genuine, NIST-traceable LoggerFlex stock, hold it locally, and can usually resolve a fault or arrange a replacement faster than anyone. If you are not sure who your distributor is, use the search and map on the distributors page, or contact LoggerFlex and we will point you to the partner covering your region.

Is the Cellular Water Meter covered the same way?

Yes. The meter carries the same two-year limited warranty against manufacturing defects from the date of shipment as every other LoggerFlex product. Two things are specific to it. Warranty and service go through the distributor or utility that supplied and commissioned the meter, because they link it to your account rather than you registering it yourself. And the 3.6 V lithium cell is sealed and rated for more than six years, so opening the housing or attempting to change the battery breaks the tamper seal and ends the cover.

How do I start a warranty claim or send a device back?

Start with the distributor who supplied the device. They handle warranty, service and returns for the units they sold, under the two-year limited warranty that covers every LoggerFlex product. Before you ship anything, email support@loggerflex.com or call +1-888-365-8880 so an engineer can confirm the fault is hardware and not configuration. Have the serial number, the DUID and the device Activity log ready. That log is a tamper-proof record of every setting change and alarm raised, and it usually settles what actually happened faster than the device itself does.

My logger stopped reporting. What should I check before returning it?

Most loggers that look dead are a connectivity problem, not a hardware fault. Check the batteries first, then confirm the device is still registered in your account. On a Wi-Fi model, press SETUP and re-join the network: LoggerFlex supports 2.4 GHz only, with a WPA or WPA2 pre-shared key and DHCP, and cannot join 5 GHz, static-IP or captive-portal networks. Passwords are case-sensitive. On a cellular model, press SYNC to force an upload over the built-in eSIM. A frozen EDGE screen is usually normal: the display refreshes only at the recording interval and pauses below 0 C.

Do I have to ship devices back for recalibration?

No. The NIST-traceable certificate is issued to the sensor, not the device, so renewal means buying a newly calibrated probe and plugging it in. Nothing goes back to a lab and the installation stays live. Certificates are valid for 3 years in use, or 5 years on the shelf. EDGE supports optional NIST certificates on up to two external sensors per device, the E-INK display shows certificate validity with a 60-day countdown as expiry nears, and LF Cloud emails reminders before it lapses. Order replacement probes through the distributor who supplied the loggers.

How do I check whether a probe's calibration certificate is still valid?

You do not need to log in. On the LF Cloud sign-in page click Calibration Certificate Lookup and enter the sensor's 16-character identification number, printed on the probe, or scan the QR code on the probe with your phone camera. The lookup returns the issue date and the current status, Valid or Expired, and opens the full PDF with the calibration procedure, measurement uncertainties and traceability to national standards. Inside the account, each device's attributes page also shows the latest calibration date with a Download certificate button.

Can I record service work in the cloud so it holds up in an audit?

Yes. Every device has a Service and Maintenance panel in LF Cloud. New maintenance report captures technician name, diagnosis, work performed, time spent and whether further action is required. Completed reports appear immediately in Service history, and anything marked as needing further action stays open until a technician edits it to resolve. A separate Activity log keeps a tamper-proof chronological record of configuration changes and alarms. You can also share a device with the Service and Maintenance role, intended for service technicians filing those reports; a wrench icon appears on the sensor card when service is due.

If we retire a device, is the subscription refunded?

Subscriptions are billed by LoggerFlex directly, not by your distributor, and no refunds are issued. If you unsubscribe, service runs to the last valid date of the term you already paid for. A Wi-Fi device then rolls to the free tier automatically and keeps live monitoring, alarms and the last 45 days of history. Premium Access is CAD $24 per device per year. Two exceptions: cellular devices need their CAD $36 per year fee to stay connected, and EDGE Lite stops sending alarms completely if Premium is not purchased.

Who supports us after the sale, the distributor or LoggerFlex?

Both, on different halves. Your authorized distributor is first line for hardware, warranty, replacement probes and local stock, and knows your installation. LoggerFlex handles the platform: support@loggerflex.com for technical support, +1-888-365-8880 for customer service in English, French and Spanish, and the in-app AI assistant in LF Cloud, which is aware of the device you have selected and your plan level. LoggerFlex also bills and supports every cloud and cellular subscription directly, so your distributor never has to run cloud billing or platform support.

NFC single-use cold-chain loggers

What is the Microthermo NFC logger, and when should I use one?

Microthermo (part nfcmic) is a single-use NFC temperature logger you drop into a parcel, cooler or pallet before it ships. It runs on its own with no gateway, no Wi-Fi and no SIM. At the destination someone with the free LoggerFlex NFC app taps a phone to the tag and the full trip history uploads to LF Cloud, where the shipment report is built. Use it when you need per-shipment proof of cold-chain condition on parcels you do not get back, rather than continuous live monitoring of a fixed room.

How do I start a tag before it ships?

Press the tag's power button three times within two seconds. A red flash lasting three seconds confirms it is running. The tag then waits 10 minutes before its first reading, which gives you time to pack it and get it into the refrigerated space before logging starts. After that it records on its own with no further handling. There is no pairing, no hotspot, no serial number to register and no Wi-Fi step anywhere in this flow — activation is the button press and nothing else.

How long does one tag log, and what happens when it fills up?

The tag captures a reading every 10 minutes and holds 4000 records, about four weeks of continuous logging. When memory is full it overwrites the oldest records, so the tag keeps running but the start of the trip is lost. Battery life is 2 to 3 months from activation. For journeys longer than four weeks, or where the earliest hours are the part you have to prove, use a reusable EDGE cellular logger that syncs as it travels rather than a single tag.

What app reads the tags, and does the person scanning need an account?

The free official LoggerFlex NFC app, on the Apple App Store for iOS and Google Play for Android. On first launch you choose a language and theme, then enter an email address that is already registered on a free LoggerFlex cloud account. There is no login or password in the app itself. The email only routes scanned data to that account, so the person scanning — a driver, a receiver, a warehouse clerk — does not have to be the account owner or hold any LoggerFlex credentials of their own.

How do I scan a tag? My phone keeps losing the read.

Lay the tag landscape on a flat surface first. On iPhone, overlap the phone's top edge over the tag by a few centimetres and press Start Scanning. On Android the app enters scan mode by itself; hold the top half of the phone over the tag, with the tag about 2 cm (1 inch) below the top of the phone. Do not move the phone or the tag while the progress bar runs. If the read is interrupted you have to start it again from the beginning.

Where does the data go, and how do I get a report out of it?

Once the read reaches 100% you can name the sensor and press Upload; make sure the phone is connected to the internet at that point. The data lands in LF Cloud, hosted in Canada, with Canadian data residency. The account owner then signs in at app.loggerflex.com, opens that sensor card and goes to Advanced Reports to extract PDF or Excel reports for transportation, vaccine safety or daily averages over any interval. A free LoggerFlex cloud account is all that is needed to receive the scan.

Can the person who scans the tag also read the temperature data?

Only if you let them. Role-based access in LF Cloud lets the person who taps to extract the data be blocked from reading it, so a courier or receiving clerk can pull a trip off a tag without opening the record. Device sharing uses five roles — Owner, Editor, Viewer, Silent Viewer and Service and Maintenance — granted per device by email invitation; adding new people requires Premium Access, which every device includes for its first year. Only the cloud users you authorize see the temperature history and the reports built from it.

Will a tag survive wet ice, gel packs and humid containers?

Yes. The tag is fully submersible, so it can travel in wet ice, sit against gel packs or ride inside a humid container where a USB stick cannot go. It is flat and light, about 9 g at 72 x 49 x 5 mm, so it lies against the product instead of taking up payload space. The measuring range is -20 °C to +70 °C (-4 °F to +158 °F). For accuracy and the remaining environmental limits, use the Microthermo datasheet on the datasheets page or ask your distributor for the current sheet.

Should I use single-use NFC tags or a reusable cellular logger for shipments?

Use Microthermo when the proof only has to exist at the end of the trip — it is built to stay with a parcel you never get back. Use a reusable cellular logger when you need alarms while the load is still moving: EDGE Thermo Cellular covers -55 C to +125 C on a built-in eSIM that works in over 170 countries. EDGE GEO adds battery-efficient, non-real-time geo-location to that temperature record and uploads trip reports for the route. Many customers run both — tags on outbound parcels, cellular loggers on their own vehicles.

How do I order more tags, and how long do they keep in the stockroom?

Microthermo is supplied through your authorized LoggerFlex distributor, who quotes quantities, lead time and local stock for your region. LoggerFlex is a B2B manufacturer and does not sell hardware direct or publish list prices, so start on the distributors page to find your partner, or use the contact form to be routed to one and to talk to an engineer about volumes. Unused tags carry a published one-year shelf life, so order against the shipping volume you expect in a year rather than stockpiling further ahead.

About LoggerFlex

Is LoggerFlex really made in Canada?

Yes. LoggerFlex was founded in Vancouver, British Columbia in 2017, and the hardware is designed and built in Canada. The platform runs on Canadian infrastructure, so your monitoring data stays under Canadian data residency, which matters for health authorities, pharmaceutical companies and government procurement. The ultra-low-power architecture behind the up-to-3-year battery life is covered by US Patent US11455877B2, with a further patent pending, 18/243,622, on the location algorithm. Head office is 2-3304 Cambie St., Vancouver BC V5Z 2W5.

How big is LoggerFlex, and who already uses it?

More than 50,000 LoggerFlex devices are deployed worldwide, in pharmacies, hospitals, food service, cold chain, laboratories and industrial sites. Reference accounts include Costco, Novo Nordisk, Toyota and PepsiCo. The company has been building monitoring hardware since 2017 and reaches customers through an authorized distributor network across Canada, the United States, Mexico, Europe, Australia and Asia. LoggerFlex runs the LF Cloud platform and its own phone support in English, French and Spanish; distributors handle local sales, stock and first-line support.

How do I buy LoggerFlex hardware?

Through an authorized LoggerFlex distributor. LoggerFlex is a B2B manufacturer, so hardware is configured and quoted per application rather than priced on this site. Use the distributor map to find the partner nearest you, or request a quote and talk to an engineer: we will recommend the exact configuration, send the datasheets, and quote it directly or route it to your local distributor. Authorized distributors carry genuine, NIST-traceable LoggerFlex devices with local stock, full warranty support, and expert guidance on selecting the right monitoring solution for your application.

We want to carry the line. How do we become a LoggerFlex distributor?

Apply through the Partners page or contact the team directly. Each application is reviewed for regional fit, technical capability and support coverage, and distributor agreements are non-exclusive. Partners get product and cloud training for sales and service teams, a 24/7 knowledge base, co-branded customer portals under their own domain, localized marketing assets, joint sales calls with our technical experts, and a dedicated Partner Success Manager. LoggerFlex bills and supports all cloud and cellular subscriptions directly, so you never run billing or cloud support.

Do you do OEM or private-label builds?

Yes. LoggerFlex builds white-label hardware and co-branded customer portals that run under your own domain, so your customers see your brand from the box to the dashboard. The devices already speak what an OEM integration needs: Modbus RTU and TCP, 4-20 mA, pulse and counter inputs, dry-contact door and flood inputs, BLE and NFC. The platform also exposes warranty and usage data, so you can settle field claims with evidence instead of guesswork. Start with the OEM inquiry on the contact page.

Can we pull LoggerFlex data into our own system?

Yes. LF Cloud exposes a documented REST API plus outbound webhooks, so you can pull historical or latest readings as JSON, register devices programmatically, or have each new reading posted to an endpoint you control for SCADA, BMS, ERP or a custom service. The API capability specs are on the Support page; per-account credentials and endpoints are provisioned once an integration is scoped. Premium Access includes 2,000 API calls a year at CAD $24 per device per year, billed by LoggerFlex directly. For Modbus or M-Bus equipment, use the OEM inquiry and ask for an engineer.

Do you offer 3D, AR or VR views of a facility?

Yes, through LoggerFlex Vista, the digital-twin layer of the platform. You upload a 2D floorplan or 3D scan, drag your active sensors into position, and the facility goes live in a browser with temperature, humidity and equipment status overlaid in 3D, with nothing to install. The same twin drives on-site augmented reality, either by pointing a phone camera at equipment or hands-free on a Quest 3 or Apple Vision Pro headset, plus remote VR walk-throughs. Ask for a demo through the contact page.

How do I get support?

Start with the distributor who supplied the device: they provide local sales, technical and warranty support. LoggerFlex's own North American team is reachable at +1-888-365-8880 and support@loggerflex.com, in English, French and Spanish. The Support page carries quick-start guides, video tutorials, datasheets and the developer API specs. Inside LF Cloud, the question-mark bubble opens an AI assistant that already knows which device you have selected and what plan it is on, and each device has its own service-request and maintenance-report tooling.

What is the warranty, and how do I return a faulty unit?

Every LoggerFlex product carries a two-year limited warranty against manufacturing defects, running from the date of shipment. The warranty work is provided through the authorized distributor that supplied your device, so contact them before shipping anything back: they carry genuine, NIST-traceable LoggerFlex stock and are your contact point for warranty and service. An engineer will usually want to confirm the fault is hardware rather than configuration first. If you do not know who supplied a unit, email support@loggerflex.com with its serial number and we will trace it.

Where do I find manuals, datasheets and calibration certificates?

Manuals and datasheets are published on this site under each product. Printable manual PDFs are available in English, French and Spanish for the models that have them; datasheet PDFs are published in English and French, and Spanish visitors are served the English sheet. Calibration certificates are not on the product page: look one up without signing in by clicking Calibration Certificate Lookup on the LF Cloud sign-in page and entering the probe's 16-character ID, or by scanning the QR code printed on the probe itself.

Troubleshooting

My logger will not join the Wi-Fi network. What should I check?

Register the device first — setup will not complete for an unregistered unit. Then press SETUP (the right button on EDGE, the top button on BLOCK), join the temporary Datalogger network from a phone, and browse to 8.8.8.8 if no page opens by itself. On EDGE and BLOCK, four requirements catch most failures: the network must be 2.4 GHz, secured with a WPA/WPA2 pre-shared key, and hand out addresses by DHCP, and the password is case-sensitive. Guest, hotel and campus SSIDs that show a captive portal or a second login page cannot be used. The CORE probe broadcasts a network named CORE instead.

I registered the device but nothing shows up on my dashboard.

Check the Serial Number and DUID against the label — on BLOCK they are printed on the back of the case. Registration has to come first: EDGE requires it before setup, BLOCK before you even power the unit. A newly added card shows dashes until the first upload lands, which is normal, not a fault. If nothing ever arrives, run the Wi-Fi setup again. On the CORE probe there is a second cause: at least one ingredient must exist in your account or the probe will not measure. If it is still missing, email support@loggerflex.com with the serial number.

The device is online but the graph is empty or hours behind. Is it broken?

Almost always not. Two independent clocks run. The recording interval decides when a reading is taken and stored locally; the syncing interval decides when readings are uploaded. Defaults are 10 minutes recording and 24 hours syncing, so a device can look quiet for most of a day while recording perfectly. A graph also reads blank if the time range you selected is shorter than the sync interval, so widen the range first. Alarms ignore the sync clock and upload immediately, which means shortening the syncing interval does not speed up alerts — it only costs battery.

The screen is blank or has not changed in hours.

The EDGE e-paper display refreshes only at each recording interval, not continuously, so a static screen between readings is expected. It also pauses updates below 0 °C (32 °F) and above +50 °C (122 °F) to protect the panel, which is why a screen can look frozen inside a freezer while the device keeps recording and alarming normally. The CORE probe's OLED is off by default to save power — press any button to wake it. If the screen is blank at room temperature and no readings are arriving either, replace the batteries before assuming hardware failure.

We lost internet for two days. Did we lose those readings?

No. The logger keeps recording to internal memory with timestamps and uploads everything it missed as soon as the connection returns, so the history closes its own gap. If a scheduled upload is missed, LF Cloud sends a Missing Upload email, so you find out without watching the dashboard. One caution for sites with weak coverage: if an alarm fires while the device is offline it retries repeatedly and can drain the battery quickly. For pure offline logging, keep the syncing interval on Battery Saving Mode and leave alarms disabled.

The batteries ran down much faster than we expected.

Rated life is up to 3 years on 4 AA cells under the patented power architecture (US11455877B2); display models typically run 2-3 years and battery-only EDGE units around two. Real life drops with a short syncing interval, heavy alarm activity, weak signal and low temperature. Two causes are worth checking first: alarms left enabled on a device that is frequently offline, and older two-slot BLOCK hardware, which must use Energizer Lithium Ultimate AA cells — standard alkalines deplete rapidly there. Replace all cells at once. On EDGE, connecting USB-C automatically drops syncing to 15 minutes.

Email alerts arrive but the text messages and phone calls have stopped.

Your prepaid alarm credit has almost certainly run out. Most devices ship with a $5 initial credit — roughly 250 SMS at $0.02 each or 100 automated calls at $0.05 — and once it is spent only email keeps going. EDGE Lite is the exception: it carries $1 of credit and two months of Premium, and stops sending alarms entirely once Premium lapses. Email alarms stay free and unlimited. Top up under My Credit in My Profile, and check that each recipient set their own phone number and notification preferences, since email is always on but SMS and calls are per-user.

We get an alarm every time someone opens the door. How do we quiet them down?

Do not widen the thresholds — use the alarm engine instead. Level 2, Persistent Condition, fires only if the reading stays out of range for a defined number of consecutive readings, which filters door openings and defrost cycles. Level 3, Time-Weighted Average, judges a rolling average rather than an instant, which is the right setting for exposure limits and MKT. Level 4, Trend Drift Detection, compares against a historical baseline to catch slow degradation. You can also set a delay before alarms are pushed, and define separate rules per measurement channel.

The NFC tag scan keeps failing or uploads nothing.

Lay the tag flat and keep both the phone and the tag still. A progress bar shows how much has been read, and if the read is interrupted you must start over. On iPhone, overlap the phone's top edge with the tag and press Start Scanning; on Android the app enters scan mode itself — hold the top half of the phone about 2 cm below the top of the tag. Uploading needs phone internet. The email you typed into the app must already belong to a registered LoggerFlex cloud account; the app has no login and cannot create one.

The water meter shows an E-code, or it never came online.

The display codes mirror the alerts in the app: E1 low battery, E2 reverse flow, E3 flow too high, E4 possible leak, E5 burst pipe, E6 water temperature out of range, E7 sensor fault, E8 empty pipe. E8 is normal right after a shut-off and clears itself when water returns. If the meter never appeared at all, check coverage: a metal lid or a deep buried vault blocks the cellular signal, so tap through to the SIGNAL screen and confirm bars before you close the pit. Never open the housing — battery replacement is a professional job.