Features: PWM stepless speed control, accurate and stable. The speed controller is made with high quality electronic components, stable performance and long service life. Built-in aluminum heat sinks, effectively extending service life. LED digital tubes show motor full speed percentage, easy to adjust the motor speed accurately. The module uses military grade double-sided circuit board. Specification: Input voltage: DC 12-60V Maximum current: 20A Continuous current: 12A Speed range: 0%-100% Control frequency: 15kHz Speed control mode: Potentiometer Forward/reverse rotation: Not supported Digital display: 0-100%, percentage of full speed Support motor: DC brush motor Potentiometer cable length: 20cm/7.87in Product size: 70*50*24mm / 2.76*1.97*0.94in Mounting hole: 3mm/0.12in Package list: 1 * DC Motor Speed Controller Note: 1. The LED digital tubes show motor full speed percentage, not motor actual speed. 2. The input voltage should be equal to the rated voltage of the motor. 3. The input positive and negative must be correctly connected. 1、PWM stepless speed control, accurate and stable. 2、The speed controller is made with high quality electronic components, stable performance and long service life. 3、Built-in aluminum heat sinks, effectively extending service life. 4、LED digital tubes show motor full speed percentage, easy to adjust the motor speed accurately. 5、The module uses military grade double-sided circuit board.