Features: brand new and high quality Large input voltage range from DC10-36V,suitable for different power source. The knob switch can adjust the motor speed steplessly. With the digital display panel,it is easy to read the parameter. The speed controller is made of ABS material,durable and has long service life. The motor is stable and has great performance while using. Specifications: Material:ABS Product name: D89498 Input voltage: DC10-36V Output voltage: linearity under load Input current: it is required to be larger than the working current of the motor. Output current: determined by load size. Continuous current: within 70 years Power: 4000W (power equal to voltagexcurrent) Static current: 0.01ma Speed regulation type: current regulation Speed regulation mode: linear potentiometer 270 degrees. Speed regulation range: 0-100% Current limiting protection: 80A Wiring type: ordinary wiring Note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x Speed Controller