Usage Tips:1. With liquid crystal display, the current mode and parameters at a glance, very clear, simple and practical; 2. Support key trigger control, high and low level trigger, switching control, suitable for most occasions; 3. Wide voltage supply (6-30V), very easy to use; 4. Support UART data uploading and parameter setting; 5. There is a one-button pause function, with reverse connection protection, reverse connection does not burn Increased the sleep mode, after enabling, about 5 minutes without any operation, automatically turn off the LCD backlight; Any key to wake up; You can set different OP, CL and LOP parameters, which are independent of each other and saved separately; All Settings are automaticallv saved after Dower failure. Colour:As Shown Material:Plastic Package Contents: 1 x Circuit Module 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.