AC 220V 2000W SCR Voltage Regulator Module Dimmer Motor Speed Controller Thermostat Electronic This voltage regulator is a specially improved circuit for motor speed regulation. It can adjust the output low voltage through a precision multi-turn potentiometer. Parameters: Operating voltage: AC 220V Power: 2000W Voltage regulation: AC 50-220V Specification size: High temperature resistant FR-4 circuit board This voltage regulator has a peak voltage absorption circuit to effectively protect high-power thyristors and has a longer and more durable life. Usage method: Connect this product in series in the circuit of a desk lamp or electrical appliance, and rotate the rotating lever of the potentiometer to adjust light and dark, speed, voltage, and temperature; it is very convenient to use.