1、Pulse width modulation(PWM) is used to make the speed more stable, and the strength is high at low speed. 2、The product is made of high-quality electronic components with stable and reliable performance. 3、The product is compact and easy to install in narrow space. 4、The input voltage of the product is within the range of DC 9-60V and the applicable current is within 30A. 5、This is a DC brush motor controller. Please don't use it on AC motors. Feature: Pulse width modulation(PWM) is used to make the speed more stable, and the strength is high at low speed. The product is made of high-quality electronic components with stable and reliable performance. The product is compact and easy to install in narrow space. The input voltage of the product is within the range of DC 9-60V and the applicable current is within 30A. This is a DC brush motor controller. Please don't use it on AC motors. Specification: Input voltage: DC 9-60V Output voltage: linear under load Maximum current: 30A controller Continuous current: 15A Speed range: 0%--100% Control frequency: 15Khz Speed control mode: potentiometer (with switch) Speed control type: Current adjustment Support motor: DC brush motor Wiring type: wire Product size: 90*52*36mm (length * width * height) Installation size: 104mm (center distance) Package list: 1 * Motor Speed Controller Note: The actual product color may deviate from the photo due to light. There may be a slight deviation in the measurement of product.