Voltage range: DC 6V-28V Working current: Rated 5A(Not suitable for motors with a starting current greater than 10A) Duty cycle (PWM):1%-100%, intuitive display on LED digital tubes Lower limit function: The lower limit can be set from 1% to 99%. Frequency: Adjustable from 1Khz to 99Khz: Default value: 20Khz Power-on mode: Set to 0 and power-on does not work; set to 1 and power-on automatically starts up. Remote control distance: Up to 100 meters in an open environment. The antenna of the remote control needs to be pulled out and the antenna of the receiving mainboard needs to be adjusted. Power supply wiring method: Connect V+ to the positive terminal of the DC input, and V- to the negative terminal of the DC input, or use a DC 5521 socket to input positive inside and negative outside Motor wiring method: M+ is connected to the positive terminal of the motor, and M- is connected to the negative terminal of the motor. Press the knob button for 3 seconds and then release it. At this point, the pairing indicator light will remain on. Then, press any button on the remote control to successfully pair. The middle button of the wireless remote control is for power on and off. Press the △ button slowly to accelerate, and press it long to accelerate quickly. ▽ Tap and press to slow down slowly, and long press to accelerate quickly. Note: Before use, please make sure that the positive and negative poles are not connected in reverse, and the input and output ports are not connected in reverse. If they are connected in reverse, it will burn out. Color: As Shown Material: Plastic+Metal Package Contents: 1 x Speed control switch 1 x Remote Control(1x9V battery is not included, you need to prepare it yourself)