If you are looking for a professional motor controller, then your research is over here. That's because our product can meet your need. Adopted of , practical and durable for long time use, not easy to get deformed and bring you much convenience. Features -Color:Multi -Material:Aluminum alloy, PCB, stainless steel -Size:8.50X5.50X3.80cm/3.34X2.16X1.49in Working voltage: 220V Adjustable voltage: 10-220V Efficiency: over 90% Maximum power: 4000W (resistive load power) Knob inner hole diameter: 6mm - Adapt to more DC motors, and can provide sufficient driving capacity for the motor. The standard 35A 4-position terminal is used, so that it can provide 4000W power. - Using circuit board, the circuit design is reasonable, and the design of the welding circuit is enlarged and thickened, which is enough to with even a large current. Safer and more reliable to use. - Safety capacitors with metal film capacitors can effectively absorb surges and , protect silicon controlled more effectively, and use them more efficiently. - Note that the load must be connected before voltage regulation. Thyristors are mainly used for resistive loads (heating wire incandescent lamps, etc.), and most single-phase motors can also be used, but there is no that they can be used. - Characterized by a sturdy and reliable texture, not easy to break, serving you for a long time. Package list: 2 x Motor Controller