It will alarm when the glass shaken or broken; Send wireless signal  to the alarm .

The sensor is wireless vibration sensor, high sensitivity, with a slight vibration the sensor will send alarm signals to the host

Power supplied 12V(inside battery12V)
Transmission frequency: 433MHz±0.5 MHz
Sending distance:  No obstacle 80m
static current: ≤10uA
Alarm current:≤30mA(door bell not work) ≤80mA(door bell  )                                                         

Work condition: temperature -10~40°C  
Humidity ≤90%

 1*wireless vibration sensor