AC 220V 4000W SCR Electric Voltage Speed Controller Regulator Switch Module, AC 220V 4000W SCR Voltage Regulator Dimming Feature:   Material: plastic and metal. Color: show as the picture. Input voltage: AC 220V. Output power: Max 4000W. Adjustable voltage: 60-220V AC. Connect this device with lamp or home appliance in a series connection, then rotate Read more about AC 220V 4000W SCR Electric Voltage Speed Controller Regulator Switch Module, AC 220V 4000W SCR Voltage Regulator Dimming[…]