Adjustable Voltage Range: The adjustable voltage range can be really smooth and adjustable from 10V to 220V, making it more suitable for household appliances that need low voltage to drive the heating wire Double Capacity Design : 220V voltage regulator adopts amprometric capacitance + metal film capacitance to absorb voltage surges and spikes, more efficient and safer to use Wide Application: used to adjust speed, brightness, voltage, the temperature of various electronic devices, such as electric ovens, water heaters, lamps, small motors, etc. High Quality: The 220V voltage regulator adopts a high-quality shell, made of aluminum and steel 1.5mm thick stainless steel, safe and practical High Quality: The 220V voltage regulator adopts high quality shell, made of 1.5mm thick aluminum and stainless steel, safe and practical 220v voltage controller, 4000w controller, alternating current controller, Speed Controller for 220V Motor Voltage regulator AC voltage regulator Voltage regulator AC voltage regulator 220V 4000W voltage regulator Why choose our AC voltage controller ? 1. The adjustable voltage range can be really smooth and adjustable from 10V to 220V, making it more suitable for devices that require low voltage to drive the heating wire. 2. Dual Capacity Design: Adopt amprometric capacitance + metal film capacitance to absorb surge and voltage spike, more efficient and safer to use. 3. Wide Application: Use to adjust the speed, brightness, voltage, temperature of various electronic devices, such as electric furnace, water heater, lamps, small motor, etc. 4. Durable performance: Using high quality housing, which is made of 1.5mm thickness aluminum and stainless steel, safe and practical. 5. Easy to use: Easily control voltage, speed, temperature and more via the adjustable rotary knob. Specifications: Color: silver Material: aluminum + stainless steel Input voltage: AC 220V Voltage regulation: AC 10-220V Power: Max. 4000W Efficiency:> 90% Size: approx. 85 x 55 x 38mm / 3.3 x 2.2 x 1.5in Package Weight: 127g Package List: 1 x Voltage Regulator Note: The charged power cannot exceed the specified maximum power, otherwise it will burn the module and electrical appliance.