Features 1. High Power and Efficiency: SCR Speed ​​Voltage Controller 4000W is designed to provide high power output and efficient performance. With its AC 220V input connection, it ensures optimal power for electric stoves, water heaters, lights, small motors, irons and more. 2. Precise Speed ​​and Voltage Control: This electronic regulator switching dimmer features a user-friendly interface with a knob that allows you to easily adjust speed, voltage and temperature settings. Whether you need to control motor speed or regulate equipment voltage, this controller provides precise control for optimal performance. 3. Durable and reliable: The SCR Speed ​​Regulating Voltage Controller 4000W has a solid structure and is equipped with a safety cover to ensure its durability and service life. Rest assured, this regulator is designed to withstand regular use and provide stable performance throughout its lifetime. 4. Easy to install and operate: High Power AC voltage stabilizer has a simple structure and easy operation, you can install and use it easily. Professional design ensures stable performance and operation, making it a convenient choice for professionals and DIY enthusiasts. 5. Versatility: Whether you need to control the speed of a motor or regulate the voltage of various devices, the applications of this motor speed regulator are versatile. Suitable for electric stoves, water heaters, lamps, small motors, electric irons, etc., providing a wide range of uses for residential and commercial purposes. Description: Working voltage: AC 220V Regulation voltage: AC 10-220V Max power: 4000W (resistive load) Efficiency: 90% Dimensions: 85 x 55 x 38MM Note: You must connect to the load before the regulator. SCR is mainly used for resistive loads (incandescent electric wire, etc.), most of the single-phase AC motor can, but can not guarantee, other types of loads buyer to confirm their own. Fuse is not a panacea, there is reaction time, if the current is too large, in addition to burn the fuse, the module may also be burned. Attention to fitting plastic cover due to the installation of the housing, can not be completely open, screwdriver to tighten the side with the point, the other to be careful when opened, excessive force easily snapping the lid, express transportation may also crushed for wearing parts, but It does not affect the module. Package included: 1 x 4000W AC220V SCR silicon controlled electronic volt regulator Package List 1 x 4000W AC220V SCR silicon controlled electronic volt regulator