Vibration sensing Voice FM radio transmitter circuit ND-2 TM-801A
Circuit is shown. It includes a full range of vibration sensors, follower, lamp relay control circuit, voice sounding circuit, high-frequency oscillation circuit and the AC rec
tifier buck power supply circuit. The vibration sensor attached to relics or precious exhibits plate surface glass case, when someone steal pry cabinet, the transmitter circuit will automatically voice alarm signal, frequency modulation (FM) radio put on duty at the automatic alarm signal demodulation and broadcast through the speakers to remind staff on duty alarm occurs.