Piezo Active Buzzer
5v Active Buzzer Magnetic Long Continous Beep Tone Alarm Ringer 12mm MINI Active Piezo Buzzers
Features: Real time location tracking, track playback. Support SMS and GPRS platform tracking. Built-in vibration senor, the realization of vehicle vibration alarm. Micro letter management platform, free control. Mobile client support android, apple system remote control.