Expand your Somfy alarm system with the Somfy Motion Detector. Place the detector in a logical place in the room. Since the detector works on batteries, you are not connected to a cable. With a viewing angle of 130 degrees and a range of 7 meters, the motion sensor has a wide range. The moment the sensor detects movement, it transmits a signal to the alarm system. You will then receive a notification via the app on your smartphone (iOS and Android).