Feature:_x000D_ _x000D_ It has multiple holes shell for heat dissipation, good heat dissipation and long service life. _x000D_ The DC motor speed control module is made of high quality electronic components, which has high stability and can maintain high stability in harsh environments. _x000D_ The potentiometer is used for speed regulation, which is simple and easy to use. _x000D_ The speed control module can achieve a large adjustment range of 0-100%. _x000D_ Equipped with indicator light and switch, it is very convenient to operate. _x000D_ _x000D_ Specification:_x000D_ Model: CCM6DS_x000D_ Applicable voltage: 12V-50V DC (wide range)_x000D_ Applicable current: 30A_x000D_ Power range: up to 1500W, recommended 12V/250W, 24V/350W, 48V/500W._x000D_ Potentiometer: resistance value B100K, opening 8mm_x000D_ Speed range: 0%-100%_x000D_ Product frequency: 21KHz_x000D_ Dimensions (length * width * height): 110*76*35mm / 4.3*3*1.4in_x000D_ Weight: 203g / 7.2oz_x000D_ _x000D_ Package list:_x000D_ 1 * Motor Speed Controller_x000D_ _x000D_ Note:_x000D_ _x000D_ This speed governor is used for DC brushed motors. _x000D_ Not suitable for speed regulation of DC brushless motors; nor can it be used as a regulator or regulator. _x000D_ Can not use 48V storage battery power supply (48V storage battery full charge and voltage will exceeds 50V) _x000D_ This is not a power module. It must be connected to the motor to speed it up. There is no change in the output of the multimeter without the motor. _x000D_ The motor can be connected without any positive or negative. When the running direction is inconsistent with the expectation, the direction can be changed by adjusting the line sequence. _x000D_ The actual product color may deviate from the photo due to light. _x000D_ There may be a slight deviation in the measurement of product.