Specification Brand : Aexit BulletPoint1 : Product Name : Motor Driver Speed Controller;Input Voltage : DC 9-90V;Rated Current : 10A BulletPoint2 : Control Power : 0.01-800W;Cut-Off Current : 10A;Modulation Type : PWM BulletPoint3 : Control By : B10K Potentiometer;Body Size : 90 x 50 x 3.3mm/3.5"x 2" x 1.3"(L*W*H);Fixing Hole Size : 16 x 6mm/0.63" x 0.24"(L*W) BulletPoint4 : Fixing Hole Center Distance : 102mm/4";Wire Length : 15cm/6", 12cm/5";Material : Metal, Aluminum, PCB BulletPoint5 : Main Color : Black, Silver Tone, Green;Wieght : 139g;Package Content : 1 x Motor Driver Speed Controller ItemName : Aexit DC 9-90V Controllers 10A 800W Rectangle PWM Motor Speed Controller Motor Speed Controllers w Potentiometer ItemPackageDimensions_Height : 22.225 centimeters ItemPackageDimensions_Length : 17.272 centimeters ItemPackageDimensions_Width : 20.955 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : motor-speed-controllers Manufacturer : Aexit Material : metal ModelNumber : modle PartNumber : f190412ae007304 ProductDescription : The motor speed controller incorporates a high power with a heat sink and can easily provide a continuous current of 10A to your DC motor or other DC load. Notice: the yellow line connects to motor negative pole,the blue line connects to motor positive pole, the black line connects to power negative pole and red to power positive pole.