It is suitable for various general-purpose applications and features a DC motor speed control with brush. Compatible with various automobile motors, including car wipers, car fans, cooling fan control, automotive air conditioning fan speed control, and motor speed regulation. Ideal for conveyor belt systems on production lines, duct exhaust fan speed control, running machine motor control, multi-computer parallel speed control, and electronic fan speed regulation. Supports dimming for various DC lamps and temperature adjustment for DC heaters. This speed controller is industrial-grade and capable of operating in sub-zero environments. Working voltage: DC 9V - 50V Maximum instantaneous current: 40A Output power: 0.01-2000W (max) Recommended usage range: 12V 250W; 24V 350W; 36V 400W; 48V 500W Quiescent current: 0.025A PWM regulation range: 5-100% PWM frequency: 200Hz Operating temperature: -40°C to +85°C (40°F to 185°F) Color: Black Material: Plastic, PCB, and electronic components Package Contents: 1 x DC Motor Speed Control PWM Controller Note: The package includes only the items listed above. Other accessories are not included. Light reflection and display differences may cause slight variations in the product color as seen on screen. Measurement may vary by +/- 1-3cm.