The RF-53 is a device that operates with RFID technology. It reads the RFID cards and cooperates with the RF-54 device. The system RF-53 with RF-54 is used to control an electric door lock and room lighting or A/C in hotels or rent rooms. The RF-53 is powered by the RF-54 device and communicates with it to transfer the code of each RFID card that it reads. The cards are supplied by request, printed with the customer’s logo (RF-51/T) or plain (RF-51). The RF-53 has an orange LED to indicate the existence of an RFID card. It is off when a card is in the slot. The device has also two indication LED’s (green and red), and a buzzer.