20A PWM DC Motor Speed Controller

This DC motor speed regulator supports an input voltage range of 10–60V DC and handles continuous current up to 10A (peak 20A). It delivers precise speed control from 5% to 100% via PWM duty cycle adjustment using the built-in potentiometer. Constructed with a high-quality circuit board for enhanced durability and longer service life. The unit features a plastic housing and is designed for compact integration in low-to-medium power DC applications. Dimensions and weight are not specified in the source material, and no IP rating or waterproof certification is stated — 'waterproof' appears only as an unverified descriptor in the raw title and is not substantiated in functional or construction details. Core functionality includes smooth, stepless speed regulation for brushed DC motors. The output is unidirectional; motor rotation direction is determined by wiring polarity and can be reversed by swapping input leads. Compatible with a variety of resistive and inductive DC loads including electric stoves, water heater heating elements, dimmable lamps, small DC motors, and electric iron thermostats. Important usage notes: This device accepts DC input only — connecting to AC mains (e.g., 230V UK household supply) will cause immediate failure. Polarity must be observed strictly: reverse connection of positive/negative terminals will damage the unit. No built-in polarity protection or overcurrent shutdown is mentioned in the source.