Radio frequency interface to integrate the remote controls of the AXESKEY 868Mhz range in an access control center, AC Plus 4410 together with the 4420 door controller, or in IP_AXES systems directly. Also allowing the addition of hands-free identifiers together with the corresponding HF Hands-free antenna. The receiver encodes the emitter signal in three different protocols depending on its configuration: Clock & Data, Wiegand 26 and Wiegand 37.