The Hercules? 2 is a trigger operated, high amperage controller. This device allows you to operate up to 50 Amps of lights, heating or air conditioning by wiring 120 or 240 Volt power through the Power Input and connecting your lights, heater or A/C to the Power Output. The appliances can then be activated by a trigger cord set via an environmental controller, timer or other such device. Featuring a 50 Amp heavy duty contactor relay. Durable 20 gauge powder-coated enclosure. Compatible with Titan Controls? environmental controllers and timers! Can be wired for 120 or 240 Volt applications. ETL listed for commercial applications. 50 Amps maximum/120 or 240 Volt/60 Hz.