100% new high qualityStable and durable, long service life, easy wiring, no need to solderName: Voltage RegulatorForm: with a hullDimensions: approximately 86 x 76 x 37 mmVoltage: 220V ACMaximum : 4000WSetting voltage: 60-220VMaterial: Aluminum alloyConstructure: 1 x adjusting knob4 x connection pad (2 x input, 2 x output)Function parameters:1 Control of speed, brightness and temperature2 safety function:A. During an electrical overload or short circuit, it will blow the fuse in the shortest possible time, to protect your electrical safety and . This is dangerous if you do not turn off the quickly when the electromenager is shortedB. When there is an electrical leak, the fuse is blown immediately, to safety.Package Contents:1 x Voltage RegulatorOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.