NOTE: This item comes with Chinese type , please confirm the voltage of your area before paling an order. Description Want to control the of the motor? Want to adjust the water temperature for the water is too hot? Want to according to your requirements? This voltage regulator will help you realize all the above things! The regulator is simple to use and can be connected to the electrical appliances by the output, it's equipped with the rotary knob and can be used for controlling light brightness, fan motor or water temperature. With -22 continuously adjustable voltage, zero , zero latency and heat dissipation, the voltage regulator can be applied to large household or small industrial electrical appliances of which power is less than 4000W. A perfect motor controller for household use! Features - Color: As shown - Material: Metal - Size: 10 x 8.3 x 5.2 cm ( W x H) Input voltage: 22 Output voltage: 0-22 adjustable (the voltmeter does not work when the output voltage is lower than 5V) power: 4000W (suitable for 2000W-3000W resistive load) Voltage regulation range: 0-22 adjustable (under load conditions) step-down to OV, boost from 1 Rated : 9A : 18A Silicon Controlled Rectifier Model: BTA41-600B/800B Product features: , , with peak voltage absorption circuit to effectively protect high-power thyristor anti- , anti-spike, absorption multiple protection - Efficiency ( ): 95% - -22 wide voltage regulating range, 0-4000W control , applicable to large or small electrical appliances such as electric furnace, lamp, motor, electric stove, electric iron fan, water heater, etc. - The rotary knob for light brightness adjusting, fan speed/ motor or water temperature control, voltage and more control. - Stable, durable and . Zero , zero latency, heat dissipation. - Easy to use, convenient to connect to the electrical appliances and do not need soldering. - NOTE: 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. Package list: 1 x Motor controller