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LoRaWAN Quick start

Square Comfort L for LoRaWAN: quick start

From the opened box to a working sensor on one page. The full manual has the details, the settings and the troubleshooting.

Revision A · October 2026 · Sensative AB

Full manual Product page Product sheet (PDF)

Square Comfort L measures temperature and relative humidity and reports them over LoRaWAN. Its built-in 4,000 mAh battery lasts well over ten years, even with frequent reporting.

In the box

  • Square Comfort L, with the adhesive already on the back

The Square screw mounting kit is sold separately.

You need

  • A LoRaWAN gateway, online and in range, added to your account on a LoRaWAN network server
  • The sensor’s DevEUI and AppKey, from the delivery information. The JoinEUI for all Square sensors is 70B3D52C0001D4C3
  • A phone with NFC. Android is recommended; an iPhone needs an NFC reading app
  • A payload decoder for Sensative VSM sensors (built into Yggio)
  • Optional: the Hugin NFC app (Android phone with NFC and GPS), an Yggio user account, and the sensor registered in Yggio with your organisation as its owner

From box to ready

1

Register the sensor in the network server

Add a new end device: activation OTAA, MAC version 1.0.4, regional parameters RP002-1.0.3, and the frequency plan for your region. Enter the DevEUI, AppKey and JoinEUI exactly, and set up decoding of the messages.

Done when: the device is listed in the network server, waiting for its first join.
2

Join the network with NFC

NFC on, phone case off. Lay the phone flat over the lower left corner of the front of Square Comfort L and keep it still for about 5 seconds: that starts the join.

Register the sensor, hold a phone with NFC over the lower left corner, and it joins within about two minutes
Lower left corner of the front, phone held still.
Done when: the network server shows the join, usually within two minutes.
3

Choose the place and check the signal

An inside wall at eye height, where the air moves freely past the sensor, away from direct sun, radiators and draughts. Indoors or sheltered outdoors (IP63). Check the signal there.

Done when: the link carries at least SF9. As a rule of thumb, SNR above −5 dB and RSSI above −115 dBm.
4

Mount

Adhesive: the surface must be clean and dry. Peel the film off and press the sensor firmly in place. Or screw the two adhesive plates of the Square screw mounting kit to the wall and press the sensor onto them.

The air vents sit at the back of the side edges, at two opposite corners. Do not seal the edges with sealant, paint or tape.
5

Test

Breathe on the sensor, or hold it in your hand for a minute.

Done when: new temperature and humidity readings arrive in your application.

More in the full manual

Settings, troubleshooting, maintenance and specifications are in the Square Comfort L for LoRaWAN manual.

Support: support@sensative.com