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LoRaWAN Quick start

Square Impact 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 Impact measures motion and vibration with a 3D accelerometer, analyses it on the device and reports the vibration spectrum, its energy and the orientation over LoRaWAN, in a sealed IP68 housing for machines, racking and structures.

In the box

  • Square Impact, with the adhesive already on the back
  • The screw mounting frame

Screws and cable ties are not included.

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 Impact and keep it still for about 5 seconds: that starts the join.

Done when: the network server shows the join, usually within two minutes.
3

Choose the place and check the signal

On the machine, upright or beam whose motion you want to measure, where the sensor can be fixed rigidly so that it moves with the structure. The housing is IP68 and IK06, for wet, dusty and knocked-about places. 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

Screws give the most rigid fixing: fix the included frame with M4 screws. Adhesive: clean the surface with a 50:50 mixture of isopropyl alcohol and water, let it dry, peel the film off and press the sensor firmly in place. Cable ties go through the eyelets, and can be combined with adhesive.

Square Impact in its mounting frame, fixed with two screws
With the mounting frame and two M4 screws.
Keep the front reachable for a phone (NFC).
5

Test

Give the structure a firm knock next to the sensor, or set the machine running.

Done when: a motion report and the vibration spectrum arrive in your application.

More in the full manual

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

Support: support@sensative.com