Why does the car alarm call itself?
Alarm device has a device called vibration sensor, when subject to external shock, will transmit the signal to the host, the host as an alarm, then send the signal to the speaker, start the alarm. Do not want it to casually alarm, you can vibration sensor sensitivity to the minimum, in fact, does not affect the anti-theft effect, but this time is not particularly large shock does not alarm only, but the abnormal means to open the door speaker will still alarm, the same effect. At the same time do not lift the alarm to play fire, do not open the car.
