Description: _x000D_ This is a easy-to use voltage regulator for controlling light brightness, speed or temperature. The big power voltage regulator is equipped with two-way silicon controlled rectifier, which is very convenient and practical. The voltage regulator has a large power and can be used for large household or small industrial electrical appliances of which power is less than 4000W(for resistive loads only, power should be reduced for inductive or capacitive loads). _x000D_ _x000D_ _x000D_ Features: _x000D_ This item has two-way large power silicon controlled rectifier and the current can be up to 20A, which is a good solution to over current of electric stove wire caused by low resistance during cooling. _x000D_ Convenient to use, simply connect input terminals to either live wire or neutral wire(220V) and output to load, then rotate knob to control voltage._x000D_ _x000D_ With a wide voltage regulating range, the output voltage can be easily adjusted between AC 0-220V input voltage_x000D_ Could be widely used as heat controller on electric stoves, water heaters, light dimmer on lamps, speed controller on small motors, or temperature controller on electric soldering iron, etc. _x000D_ The resistive load power should be less than 4000W, and power should be largely reduced(half or more) for inductive or capacitive loads, otherwise controller and load will burn out._x000D_ _x000D_ _x000D_ _x000D_ Specifications: _x000D_ Input Voltage: AC220V_x000D_ Max Power: 4000W(resistive load)_x000D_ Output Voltage: Adjustable between AC 0-220V input voltage_x000D_ Size: 85 x 60 x 45mm / 3.34 x 2.36 x 1.77" _x000D_ _x000D_ _x000D_ Package Includes: _x000D_ 1 x Voltage Regulator _x000D_ _x000D_ _x000D_ Note: The maximum output voltage is equal to input voltage, e.g. if input 110V AC, the maximum output voltage is 110V AC; if input 220V AC, the maximum output voltage is 220V AC. 1This item has two-way large power silicon controlled rectifier and the current can be up to 20A, which is a good solution to over current of electric stove wire caused by low resistance during cooling 2Convenient to use, simply connect input terminals to either live wire or neutral wire(220V) and output to load, then rotate knob to control voltage 3With a wide voltage regulating range, the output voltage can be easily adjusted from AC 0?220V input voltage 4Could be widely used as heat controller on electric stoves, water heaters, light dimmer on lamps, speed controller on small motors, or temperature controller on electric soldering iron, etc 5The resistive load power should be less than 4000W, and power should be largely reduced(half or more) for inductive or capacitive loads, otherwise controller and load will burn out