Input voltage range: DC 10-60V Applicable current range: continuous current within 10A, maximum current 20A Speed range: 5% - 100% Application: This motor controller can be used for electric stoves, water heater temperature regulation, dimming lamps, small motor speed control, and electric iron thermostats. Made with a high-quality circuit board to ensure a longer service life. Matters needing attention: 1. When the DC motor speed controller is powered, it must not be connected directly to AC power (such as household outlets), otherwise it may be damaged. 2. The positive and negative terminals of the DC power supply must not be reversed, otherwise the speed controller may be damaged. 3. Motors are not polarity-sensitive; if the rotation direction is opposite to the desired direction, reverse the wiring connections to change the direction. 4. The potentiometer knob adjusts the duty cycle of the output, thereby controlling the 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 different display settings may cause slight color variations between the image and the actual item. Measurement error allowed is +/- 1-3 cm.