Input voltage range: DC 10-60V Applicable current range: Continuous current up to 10A, maximum current 20A Speed range: 5% - 100% Application: This motor speed controller can be used for electric stoves, water heater temperature regulation, dimming lamps, small motor speed control, electric iron thermostats, and similar applications. Made with high-quality circuit board for extended service life. Important: 1. This DC motor speed controller must not be connected directly to AC power (such as household power), as it may cause damage. 2. Do not reverse the positive and negative terminals of the DC power supply, otherwise the speed controller may be damaged. 3. Motors do not have fixed positive or negative directions. If the rotation direction is opposite to the desired direction, reverse the wiring to change the direction. 4. The potentiometer knob adjusts the output duty cycle, allowing control of motor speed. PWM DC Motor Speed Controller 12V 24V 48V 20A High Power Waterproof Color: As shown Material: Plastic Package Contents: 1 x 20A DC Motor Speed Regulator Note: Light reflection and differences in display screens may cause slight variations in color between the image and the actual item. Measurement error allowed is +/- 1-3 cm.