ARDUINO RFID DOOR LOCK (Mortise) - For HOTEL DOOR LOCKS (SMART)
Write RFID Card's UID to the EEPROM of the Arduino/NodeMCU
Use above card to authenticate and lock/unlock the door. (Only this card can be used to lock/unlock the door). Card id is saved in the EEPROM. It will never loss, even no power to the device.