Motorola MBP81SN User Manual page 3

Overview of the Alert Sensor
1. Battery Cover
2. Sensor Unit
You can mount the Sensor Unit on the door or window using a
suitable double-sided adhesive spacer.
3. Pair/Reset Button
Use a pointed object to press and hold for 7 seconds to reset the
Unit and enter pairing mode.
4. Status LED
Lights up in Red when the Alert Sensor is on.
5. Magnet Unit
You can mount the Magnet Unit beside the Sensor Unit using a
suitable double-sided adhesive spacer. For the Alert Sensor to
detect that the door or window is closed, the gap between the
Magnet Unit and the Sensor Unit should not be more than 1/3"
(10mm).