100% brand new and high quality working voltage: DC9v- DC 50V Rated current:40A(Maximum output current)Control Motor Technical indicators: (1) Working voltage: DC10V-DC50V wide working voltage range (2) Control power: 0.01-2000W (maximum rated current 40A) Different working voltages correspond to different control powers as follows: When the working voltage is 12V, 12V*40A =480W When the working voltage is 24V, 24V*40A =960W When the working voltage is 36V, 36V*40A =1440W When the working voltage is 40V, 40V*40A =1600W When the working voltage is 50V, 50V*40A =2000W (3) Quiescent current: 0.025A (when the working voltage is from DC10V to DC50V, the quiescent current will not exceed 25ma) (4) PWM duty cycle: 5%-100% (5) PWM frequency: 12khz (6) Working temperature: -20 -- 40 (ambient temperature -20 degrees below zero to 40 degrees above zero) This governor is of industrial grade quality and can work stably in an environment below zero, generally a commercial-grade governor It is not possible to work stably below zero. Dimensions of the circuit board: length 90mm, width 51mm, height about 30mm (not including the adjustment part of the potentiometer) The main purpose: 1. Speed regulation of various general-purpose DC brush motors 2. Speed regulation of various automobile motors (speed regulation of automobile cooling fan, speed regulation of automobile fan, speed regulation of automobile wiper motor, speed regulation of automobile air conditioner fan) 3. Speed regulation of production line conveyor belt, speed regulation of pipeline exhaust fan, speed regulation of treadmill, parallel speed regulation of multiple computer fans, and speed regulation of electronic fans. 4. Various types of DC bulb dimming, various types of DC heater temperature adjustment. 5. All kinds of ...... Quantity: 1pc Note: Manual measurement, there may be 1-2cm/1-3g error, which is not a quality problem. Due to different screen displays, there may be a color difference between the real object and the picture, and the main picture shall prevail .