Features 1、The DC motor speed regulator controls the speed of the DC motor by adjusting pulse width modulation (PWM). 2、Adjustable speed range is 0%-100%,PWM frequency is 25Khz,adjustable duty cycle is 5%-100%. 3、Suitable for DC motors (or DC loads) up to 20A. 4、The potentiometer has a variable speed rotation function and a button rotation function. 5、With a metal case and connection label, the product is easy to install and use. Specification Item Type:DC Motor Controller Output Current: 0-20A Continuous Power: 1200W Speed Control Type: Current Adjustment Speed Control Mode: Potentiometer (Linear) Speed Range: 0 - 100% Control Frequency: 25KHZ Size:92 x 52 x 36mm / 3.62 x 2.05 x 1.42in Net Weight: 130 g / 4.59 oz(approx.) Installation Size:Central Distance 104mm / 4.09in Potentiometer Mounting Hole:7mm Package List 1 x DC Motor Speed Controller