Enhanced Safety Features: Crafted from high-quality circuit boards, this motor speed controller ensures robust protection against circuit malfunctions. Its design guarantees safe and reliable operation, making it a choice for your motor control needs. Versatile Application: Ideal for regulating speed in three-phase systems such as cleaning fans, central air conditioning splitters, and axial fans. This controller's flexibility makes it suitable for a wide range of industrial and commercial applications. User-Friendly Installation: Equipped with straightforward wiring instructions, this controller connects easily to a three-phase 380V input and outputs to a three-phase fan. Reversing fan direction is as simple as swapping two wires at the output terminal, ensuring hassle-free setup. Construction: The controller's aluminum alloy housing not only provides excellent oxidation and wear resistance but also enhances the overall durability, extending the lifespan of the device under rigorous conditions. Adjustable Power Settings: This motor speed controller features a manual adjustment knob, allowing users to tailor the power output to meet specific operational requirements. This adjustability ensures optimal performance across different tasks and conditions. Colour:silver Material:Aluminum Alloy Random sticker styles, don't accept the specified styles Package Contents: 2 x Speed Controller Only the above package content, other products are not included. Note: Light reflection 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.