ITEM NAME:4000W 220V AC SCR Motor Speed Controller Module Voltage Regulator Dimmer Descriptio n Specification: material: metal Color: silver Size: 85*55*38mm Working voltage: AC 220V Maximum power: 4000W (connecting resistive load) Voltage regulation: AC 0-220V, starting from AC 10V Product list: 4000W 220V AC SCR Voltage Regulator *1 Feature: 100% brand new and high quality The input is connected with AC 220V, output is connected to the electric stove wire or motor appliances, then rotate the knob for speed, voltage, temperature control. High quality buy, happy buyï ¼ 4000W 220V AC SCR Motor Speed Controller Module Voltage Regulator Dimmer.Maximum power: 4000W (connecting resistive load). The input is connected with AC 220V, output is connected to the electric stove wire or motor appliances. We want to make sure you are happy with our item.