Impinj designed the Speedway® Revolution GPIO Box for use with the Speedway® Revolution reader to provide convenient access to the reader’s GPIO (General Purpose Input/Output) port. The GPIO Box interfaces with the reader via a supplied HD15 cable, and separates each input and output signal to easy-access screw terminals. Neighboring ground and power terminals accompany each signal terminal to easily connect three-wire devices. The GPIO Box also includes an on-board relay to interface with devices require high wattage or an open/short signal.