... card reader,Waterproof single access control,keypad digital reader,Alarm,can add doorbell S100RF The S100RF uses the latest microprocessor technology to ... card number or Wg4 key numberTamper AlarmBuilt-in buzzer,will alarm once there is illegal disassembleWork VoltageDC12V±10% Static Current ≤30mA ... IC card reader,Waterproof single access control,keypad digital reader,Alarm,can add doorbell S100RF