Method and apparatus for providing access to a secure region

摘要

Apparatus for controlling access to a secure region has an audio transducer. A DTMF decoder is connected to the audio transducer. A processor is connected to the DTMF decoder to receive DTMF signals. A memory is connected to the processor storing a code. The processor compares the stored code to the signal from the DTMF decoder and generates an access enable signal in response thereto. A baseband signal output system for connection to a wall control of a garage door operator and for providing a base signal in response to the access enable signal. A radio frequency transmitter provides a radio frequency signal to a radio frequency receiver of the garage door operator in response to the access signal.