Crime Guard AU80

This Crime Guard AU80 glass tampering sensor is designed to listen for the sound of breaking auto glass, a very specific band of frequencies. The microphone is connected to the sensor by a 3-foot wire. A 2-foot wire bundle plugs into your Crime Guard alarm brain. The unit's sensitivity is adjustable. Mounting hardware is included. Dimensions: 3"L x 2-3/4"W x 1-1/8"H. (This sensor is an option for the 328i and 533i systems. A glass tampering sensor is included with the 745i system.)