LoggerFlex NFC App

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.

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.

As standard, the tag records every 10 minutes and holds 4,000 readings, about four weeks, then stops recording when the memory is full, so the start of the trip is kept. The interval can be configured to order anywhere from 1 minute to 24 hours, which shortens or stretches that window. Continuous mode can be ordered instead: the tag keeps recording and overwrites the oldest reading, so scan it at least once per memory cycle and LF Cloud keeps every reading. The CR2032 battery lasts about 1 year after activation, and five years on the shelf before activation. For alarms while a load is still moving, use a reusable EDGE cellular logger that syncs as it travels.

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.

Lay the tag landscape on a flat surface first. On iPhone, overlap the phone's top edge over the tag by a few centimetres (about an inch) 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 (0.8 in) 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.

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 goes directly to our servers in Canada (Montreal). 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.

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. For NFC tags, sharing with as many people as you like is free, with no subscription. Only the cloud users you authorize see the temperature history and the reports built from it.

Yes. The tag is waterproof, 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 (0.3 oz) at 72 x 49 x 5 mm (2.8 x 1.9 x 0.2 in), 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), with an accuracy of ±0.5 °C (±0.9 °F); the tag does not come with a NIST certificate. For the remaining environmental limits, use the Microthermo datasheet on the datasheets page or ask your distributor for the current sheet.

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 (-67 °F to +257 °F) on a built-in eSIM that works in over 170 countries. EDGE GEO adds battery-efficient, non-real-time geo-location from cell towers and WiFi networks 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.

Microthermo is supplied through your authorized LoggerFlex distributor, who quotes quantities, lead time and local stock for your region. LoggerFlex does not publish list prices on loggerflex.com, 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 keep for about five years on the shelf, and the battery lasts about one year once a tag is activated, so order against the shipping volume you expect rather than stockpiling far ahead.