Piezo Active Buzzer
5v Active Buzzer Magnetic Long Continous Beep Tone Alarm Ringer 12mm MINI Active Piezo Buzzers
These black plastic wheels are designed specifically for use with our FEETECH FS90R Servo. The wheels have silicone tires and measure 60 mm (2.36?) in diameter.Four additional mounting holes for 4-40 screws make it possible to use the wheel with several of our universal mounting hubs.
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.