The Asco 9204 remote control switch is an industrial electrical control device used to remotely operate a power circuit. It functions as a manual operator that sends a control signal to energize other equipment such as contactors or solenoid valves when activated. The switch typically supports three‑pole switching and is designed to handle high current loads, often used in motor control panels or machinery starter circuits. It is activated by a remote input or local control, allowing safer and convenient operation of heavy electrical equipment from a distance. This type of switch is commonly found in industrial automation, manufacturing equipment, and electrical distribution systems where remote control of power circuits is needed.