NOTE: This item comes with a Chinese type I plug; please confirm the voltage compatibility in your region before ordering. Description Want to control the speed of a motor? Need to adjust water temperature when it's too hot? Want to dim lights according to your needs? This AC voltage regulator helps you achieve all of these functions. Simple to use, the regulator connects directly to electrical appliances via output terminals and features a rotary knob for controlling light brightness, fan or motor speed, and water temperature. With an AC 0V–220V continuously adjustable output, zero hysteresis, zero latency, and excellent heat dissipation, this voltage regulator is suitable for household or small industrial appliances with power up to 4000W. A reliable solution for motor control in home applications. Features - Color: As shown - Material: Metal - Size: 10 x 8.3 x 5.2 cm (L x W x H) - Input voltage: AC 220V - Output voltage: 0–220V adjustable (voltmeter may not display accurately below 5V) - Maximum power: 4000W (recommended for resistive loads of 2000W–3000W) - Voltage regulation range: 0–220V stepless adjustment (step-down to 0V, boost from 10V under load) - Rated current: 9A - Maximum current: 18A - SCR Model: BTA41-600B/800B - Built-in peak voltage absorption circuit provides protection against surges and spikes; includes RC absorption for multiple protection layers - Efficiency: 95% - Wide voltage regulation range from AC 0V to 220V; supports motor power control up to 4000W; compatible with various resistive and inductive loads such as lamps, heaters, motors, electric stoves, irons, fans, and water heaters - Rotary knob enables precise control of light brightness, fan speed, motor operation, or water temperature - Stable performance, durable construction, long service life; designed with zero lag and superior heat dissipation - Easy to connect without soldering; straightforward integration with appliances Note: Resistive load must not exceed 4000W. For inductive or capacitive loads, reduce power significantly (by half or more) to prevent damage to the controller or connected device. Packing List 1 x Motor Controller