_x000D_ This is a simple and easy-to-use DC motor speed controller of small size, elegant appearance and stable performance. It is made with high quality circuit board which ensures a longer service life. The current can be adjusted from 1A to 10A which is quite convenient to set. _x000D_ _x000D_ _x000D_ Features: _x000D_ The current of this motor speed controller can be adjusted from 1A to 10A, and it is simple to set._x000D_ _x000D_ Suitable for motors of which voltage is 12V with power less than 120W and that is 24V with power less than 200W. _x000D_ The positive and negative pole of motor can be connected one way or another. Exchange the pole when the rotation direction is not as expected, exchange the pole. _x000D_ Rotate the knob to change output so to change the revolving speed of motor. _x000D_ This controller can not be connected to alternating current, or it will be burnt. _x000D_ Please make sure the positive and negative polarity is connected correctly, otherwise the controller will be damaged. _x000D_ _x000D_ _x000D_ Specifications:_x000D_ Resistance: 100K_x000D_ Wire Length: 40cm_x000D_ Voltage Range: DC10V~40V(DC12~36V suggested)_x000D_ Power: 12V*10A=120W;24V*10A=200W,.....36V*10A=360W_x000D_ Current: 10A(rated), 15A(Max.), adjustable from 1A to 10A_x000D_ Speed Adjustable Range: 0-100%_x000D_ PWM Frequency: 21kHz_x000D_ Size: 85.5mm x 54mm x 27mm / 3.36 x 2.12 x 1.06" _x000D_ _x000D_ _x000D_ Package Includes: _x000D_ 1 x Motor Speed Controller