Description: 100% brand new, high quality, stable and durable, long service life, easy wiring, no soldering required. Name: Voltage Regulator; Appearance: Housing; Dimensions: Approx. 86 x 76 x 37 mm; Voltage: 220V AC; Maximum Power: 4000W; Setting Voltage: 60-220V; Material: Aluminum Alloy; Structure: 1 adjustment knob, 4 terminal blocks (2 inputs, 2 outputs); Functional Parameters: 1. Control speed, brightness, and temperature; 2. Safety Features: A. In case of overload or short circuit, it will blow the fuse in the shortest time to protect your electrical safety. It is extremely dangerous if the power is not turned off quickly when the voltage regulator is short-circuited. In case of leakage, the fuse will blow immediately to ensure safety. Package Contents: 1 x Voltage Regulator. Only the above package contents are included; other products are not included. Note: Light and different monitors may cause the color of the item in the picture to be slightly different from the actual product. The allowable measurement error is +/- 1-3 cm.