PWM motor speed controller This product brings together a wide range of modern motor speed control, with the advantages of small size, simple operation, high current resistance and reverse connection. Suitable for most users in environments with speeds, support acceleration and deceleration functions can be set through the menu, with set parameters power off permanent memory function Voltage: DC8V-55V (wide voltage anti-back protection) Speed range: long press / short press to adjust the degree, 0% -100% speed Drive current: up to 10A, (recommended output series 12A fuse) Standby current: less than 17mA Mounting hole: diameter 3mm Working temperature: -20 C ~ 70 C Instructions: 1. Click/long press the "speed increase" button to increase the motor speed to 100%. 2. Click/long press the "speed down" button to increase the motor speed to a minimum of 0%. 3. Press and hold the "Power On/Off" button for one second, the controller will be turned on or off (the power is turned off by default, and the memory function is activated after booting) Precautions: 1. The digital tube flashes at the moment of power-on (normal phenomenon, no need to worry) 2, close to the limit drive current working conditions, it is recommended to take the output end of the fuse 3. The DC motor speed controller cannot be installed in where there is dripping water and children can reach it. 4. After wiring, check if is correct and then energize, so as to avoid accidentally burning the temperature controller and load device. Wiring: "M+" and "M-" are respectively connected to the positive and negative terminals of the output, M+ is positive and M- is negative. "VIN" and "GND" are respectively connected to the positive and negative terminals of the input terminal, Vinis positive and GND is negative (input power supply voltage is DC8V-55V) Colour: as shown Material: Plastic Package Contents: 1 * DC PWM Motor Speed Controller Only 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.