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 Power: 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 power quickly when the electromenager is shortedB. When there is an electrical leak, the fuse is blown immediately, to ensure safety.The package includes:2 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.