The radio controls to be used throughout the complex shall be camden door controls TX & RX series transmitters and receivers. the radio controls shall pre-programmed at the factory with over 1,000,000 available codes. receivers shall auto-learn a minimum of 10 transmitter codes. wall switch ready transmitters, and receivers shall be modified at the factory to ensure strict compliance with Fcc (and doc). receivers shall be of the 5-wire type allowing a Form c relay output.