The 4802A321000033 is a COMBUSTIBLE GAS CONTROL MODULE manufactured by GENERAL MOTORS. This gas control module is part of the 4802A series and features a single channel with a digital display scaled from 0 to 99% LEL. It operates with a voltage of 20-35VDC, supports RS-485 serial communication, and provides LED status indicators for fault and alarm status. Designed for use with catalytic bead sensors, this module offers precise and accurate gas detection.