Wireless magnetic sensor can be installed on the doors, windows and even fridge lids. By detecting the opening and closing action, the sensor can wirelessly notify and alarm users if for example you left your fridge or canopy door open. Can also be used as a security device for intruder alert. The unit has a built in tamper switch.
The nGauge 4x4 Magnetic sensor consists of a main body, mounted to the door or window frame, and a magnet to be mounted to the door or window.