Features:_x000D_ _x000D_ This is a simple and easy-to-use DC brushed motor speed controller of elegant appearance and stable performance. _x000D_ Speed controller is made with high quality circuit board which ensures a longer service life. _x000D_ This motor speed controller would change direction of rotation that accomplishes reversing motor's direction. _x000D_ Convenient to use, simply rotate the knob to change output so to change the revolving speed of brushed motor. _x000D_ Designed with convenient screw terminals for quick wire connection. _x000D_ _x000D_ Specification:_x000D_ Applicable Motor: Brushed motor_x000D_ Input Voltage: DC 6V 12V 24V_x000D_ Maximum Current: 3A_x000D_ Size: Approx. 50*32*15mm/2*1.3*0.6inch_x000D_ Weight: Approx. 34g / 1.2oz_x000D_ _x000D_ Package List:_x000D_ 1 x PWM Motor Speed Controller_x000D_ _x000D_ Note:_x000D_ _x000D_ Connected to DC power supply, don't directly connect household 220V alternating current. _x000D_ This is NOT a power module, motor must be connected to motor to control speed, the multimeter output will not change without motor. _x000D_ This governor is used for DC brushed motor. _x000D_ NOT suitable for speed adjustment of DC brushless motor; NOR can it be used as a voltage regulator or stabilizer.