Voltage range: DC 6V-28V Working current: Rated 5A(Not suitable for motors with a starting current 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. the knob button for 3 seconds and then release it. At this point, the pairing indicator light remain on. Then, any button on the remote control to successfully pair. The middle button of the wireless remote control is for power on and off. the button slowly to accelerate, and it long to accelerate quickly. Tap and to slowly, and long 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 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) 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.