Welcome to our shop! This is a simple and easy-to-use DC motor speed controller of stable performance. It is made with high-quality circuit board, ensuring a longer service life. The speed controller is equipped with a fuse tube to protect it from burning out due to short circuits. It also has a reverse connection protection function. The controller is designed with convenient screw terminals for quick wiring. Specification: - Input Voltage: DC 12V-40V - Control Power: 0.01-400W - Rated Current: 8A - Maximum Current: 10A - Static Current: 0.02A (standby status) - Frequency: 13kHz - Speed Adjustment Range: 10%-100% - Hole Diameter: 3.2mm - Operating Temperature: -20℃~125℃ - Dimensions: 75*60*28mm / 2.95*2.36*1.10in - Package Weight: Approx. 70g/2.4oz 100% Satisfaction: Our customers are our top priority. If you find any product problems after receiving the goods, such as damage and incorrect quantity of goods, please contact the seller immediately. We try our best to provide you with satisfactory after-sales service.