... 3)Waterproof Waterproof single access control,keypad digital reader,EM/ID card reader,Alarm,can add doorbell S100RF The S100RF ... number or Wg4 key numberTamper AlarmBuilt-in buzzer,will alarm once there is illegal disassembleWork VoltageDC12V±10% Static Current ... Connection detailsWaterproof test Waterproof single access control,keypad digital reader,EM/ID card reader,Alarm,can add doorbell S100RF