This is an RFID Reader with a keypad, MIFARE DESFire. The key equipped with a corresponding MIFARE DESFire® tag is K10S.6. This reader is capable of reading both types of tags/keys K10S.5 and K10S.6.
Air communication between the reader and the RFID is encrypted when using the corresponding encrypted tag, K10S.6. Also, the wire communication between the reader and the door module is encrypted.
RFID Reader N104.3 is depicted in the figure below.