Features The recommended control power is within 12V250W, within 24V350W.. within 48V500W. Simple wiring, convenient operation, easy to adjust and bring you convenience. PWM stepless speed regulation, accurate control and low noise. 12~50V wide working voltage range, suitable for more occasion. Made of high quality material, safe and eco-friendly, stable and practical. Specification: Condition: 100% Brand New Item Type: PWM DC Motor Speed Controller Material: aluminum alloy Model: CCM6DS Potentiometer: resistance value B100K; opening 8mm / 0.3oz; Working voltage: DC12V‑50V The output voltage is about 0‑100% of the input voltage. Control power: recommended within 12V250W, within 24V350W...48V500W. Rated current: 30A Speed adjustment range: 0%‑100% PWM frequency: 21kHz Size: Approx. 110 x 76 x 35mm / 4.3 x 3 x 1.4in Package List:1 x PWM DC Motor Speed Controller Package List 1 x PWM DC Motor Speed Controller