Description: This is a simple and easy-to-use DC motor speed controller with small size, elegant appearance and stable performance. It is manufactured with high quality circuit board which ensures long lasting longer life.Packing with anti-static bag, you don't need to worry about damage caused by static electricity during transportation. Features: Well made with high quality circuit board, long service life. Simple and easy to use DC motor speed controller. Small size and elegant appearance. The performance is very stable. Maximum current up to 20A, heat sink and fan are required. Packed in an anti-static bag to protect it from static electricity damage during transportation. Specifications: Voltage: DC10-60V Max output current: 20A (10A, less than 450W suggested when used continuously, improve heat dissipation) Max power: 1200W Speed regulation type: current setting Speed regulation mode: Potentiometer (linear) Speed regulation duty cycle range: 0--100% Control frequency: 25KHZ Wiring methods: barrier strip screw terminals Button wire length: 20cm/7.87 Size: 7.6 x 4.4 x 2.7cm/2.99 x 1.73 x 1.06" Weight: 77g (Approx.) Package Includes: 1 x Cruise Control Note: 1. Make sure the polarity positive and negative is correctly connected. 2. The wiring should not touch the heat sinks, otherwise it will probably burn the circuit board. This is not a power module. This is only if the module is first connected to the motor that it can control the speed.3.Please allow 1-3mm error due to manual measurement.Thanks for your understanding. 4. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.