How It Works - Motorola MBP81SN User Manual

2. How it works

The Alert Sensor is made up of 2 components - the sensor itself and the magnet.
When the magnet is within 1/3" (10mm) of the sensor, it detects that the window
is closed. When the magnet is more than 1/3" (10mm) away, the sensor detects
that the window is opened.
In the diagram below, the Alert Sensor is on the window frame and the magnet
on the window. When the window swings open more than 1/3" (10mm), the
Alert Sensor detects that the window is opened and sends a notification to your
®
Android™ or iOS device.
Alert Sensor
Magnet
6 How it works