Voltage: AC 110V - 220V Maximum Power: 10000W (connected resistive load) Voltage Regulation: AC 0V to Input-voltage Dimensions: 111MMx 77MMx 37MM High temperature fire FR4 Circuit board for Electric furnace, water heater, lamps, small motor, electric iron etc. Note: the load cannot exceed the specified maximum power. please pay attention to the temperature at first use. if the temperature too hot exceed 80 °c, please enhance heatsink. or would burn out module and load. if connect to inductive load or Capacitive load, the power must leave Two-thirds (2/3) margin. Package include: 1x 10000W AC110V 220V 75A SCR Speed Controller Voltage Regulator Dimmer Thermostat