The hidden installed microphone analyzes the frequency, intensity and the timing of all notes in the vehicle. The spectral properties of a recorded sound will be evaluated by a microprocessor. If the typical properties of glass breaking sound is recognized, the alarm will be triggered. This technology works with no false alarm.
Advantages of the system:
- affordable sensor
- easy installation
- minimum costs for wiring
- very high immunity to false alarms
If you wish to connect multiple alarm sensors to an alarm input of the alarm system, you need to decouple each alarm line with a blocking diode (sold separately). Otherwise it can cause false alarms.
- Red: Connect the red wire from the 3-pin connector with 12 V permanent
- Black: Connect the black wire of the 3-pin connector to ground or "ground when activated" port on your alarm system
- Blue: Connect the blue wire from the 3-pin connector with the (-) Alarm Input your alarm system
- Choose a good place to install the system, e. g. the headliner or with respect to the monitoring at the wheel, to ensure optimum performance of the sensor. Avoid proximity to noisy engines, compressors and blowers. Determine the exact position and orientation of the glass breakage sensor so that the microphone side of the sensor has an unobstructed view of the monitored wheels. It may conceal the detection angle of the sensor no objects or harnesses.
- Adjust the sensitivity using the small knob on the housing. Make a noise with a keychain to check the setting. A knock with a coin on a vehicle window should not trigger an alarm. The red LED lights up whenever the sensor triggers an alarm.
- operating voltage: 9-15 V DC
- power consumption: 0001 A (average value during normal operation)
- temperature range: -40 °C ~ + 85 °C
- output: negative pulse of 0.5 seconds (short-circuit protection)