The Delta-3 Model DRA 1-Channel 12-volt Receiver is a small economical unit designed for commercial gate and door access control. It is compatible with solid state control boards. Upon receipt of a properly coded signal from a transmitter, it provides a switch operation for both NO and NC circuits. Any Delta-3 transmitter may be coded to activate this receiver, and any number of transmitters may be used to operate this receiver. In addition, the DRA may be programmed to respond to one of 256 digital codes.