Feature 1Volt Regulator: This SCR voltage regulator can turn the AC 220V input voltage to provide 0220V adjustable output voltage with high stability. 2Simple Control: Equipped with multipurpose socket and power indicator, this voltage control switch uses a knob for stepless voltage adjustment. 3High in Safety: No delay, the effective protection of high power thyristors with peak voltage absorption circuit can safely prevent the surges. 4Better Utility: Allows for flexible application in motor speed control, label printing machine, EE laboratory, railway switch test and so on. 5Easy to Install: Light in weight and compact in size as well, the voltage regulator controller is very convenient to install in several minutes.Item Type: SCR Voltage RegulatorInput Voltage: AC220VPlug Specifications: EU PlugOutput Voltage: 0-220V adjustable, and the voltmeter does not work when the output voltage is below 5V. Power: 4000W, suitable for 2000W-3000W resistive loads. Voltage Regulation Range: 0-220V stepless adjustable under load, voltage reduction to 0V, voltage increase from 10V. Overload Protection: 15ARated Current: 9AMaximum Current: 18A .wang-edit-text{ font-family:'Arial' !important } .wang-edit-text table { border-top: 1px solid 000 border-left: 1px solid 000 } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid 000 border-right: 1px solid 000 padding: 3px 5px } .wang-edit-text table th { text-align: center }Package List1 x SCR Voltage RegulatorNote1. The measured output voltage when the machine is empty is a virtual voltage, and the the correct output voltage can be measured when a load of over 20W is connected. 2. Input AC power, the output is also AC power, not DC power. 3. 4000W mentioned refers to the maximum power when working under resistive loads. Inductive loads account for one third of resistive loads, while resistive loads refer to tungsten filament lamps, heating wires, etc. Inductive loads refer to series excited motors, etc. Please be cautious when using circuit board electronic products. 4. The metal casing of this product must be securely grounded. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.