Features: brand new and high quality It is fit all kinds of general-purpose and have a for motor speed with brush.With good follow-up performances and fast response Main Usage: widely use to people DIY, hobby, scientic test, such as control computer for pad fan speed, control bulb, control motor kymco, control HHO Pluse Width modulator, Test Equipment, industrial automation, speed regulator module board support PLC, motor electric pump fan speed control, PWM HHO controller,remote control toys, etc......All kinds of automobile motor car, (car wiper, car fan control cooling fan control, automobile air-conditioning fan speed control motor speed)· Conveyor belt of the production line , pipe exhaust fan speed control and running machine control of motor speed, multiple computers parallel speed control, electronic fan speed control. All kinds of for lamp was dimming, all kinds of for heater adjust the temperature, This speed governor is the grade quality for the industrial , can work in freezing environment. Specifications: Working Voltage: DC10V- DC 50V for Peak Current: 40A Output Power : 0.01-2000W (max) Recommended Use Range:12V 480W;24V960W;36V 1440W;50V 2000W Quiescent Current:0.025A PWM Regulation Range:5-100% PWM Frequency : 12khz· for Case size:108x56x40mm/ 4.25x2.2x1.6in Operating Temperature:-20°C~+40°C Shipping Weight : 150g Package Includes: 1 PC x DC Speed Controller note: Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand. Please allow 0-1cm error due to the manual measurment. When wiring, pay attention that the positive and negative poles of the power supply must not be reversed. Reversed connection is equivalent to a short circuit. The current is large and the governor will be burned out instantly. Please connect according to the instructions next to the terminal. The governor is a DC governor, and the power supply must be a DC power supply within 9-50V.