This pwm controller is made of , which can withstand use. Features the aluminum alloy material, which has high durability, not easy to deform. Fine workmanship, practicality. This pwm controller will make control voltage output easier and smoother. Features -Color:Multi -Material:Aluminum alloy -Size:9.00X5.90X3.40cm/3.54X2.32X1.34in -Size:13.00X3.50X1.20cm/5.11X1.38X0.47in Note: Random style Applicable voltage range: DC 7-70V Drive current: up to 30A Control power: 12V within 300W, 24V within , 48V within 450W, 60V within 500W Duty cycle adjustable range: about 1%- PWM frequency: 12KHZ - The PWM DC motor speed controller has the functions of running, stopping and braking. The adjustable potentiometer cord is detachable. - The motor speed control has a knob with function. Easy to use, it can be directly connected to the motor, and can control the motor speed from 0% to full speed. - This aluminum shell adjustable PWM motor speed controller uses high-voltage MOS tubes, triple-voltage high-frequency low-resistance capacitors, and automotive . - 7-70V wide voltage input (70V is the maximum working voltage, please leave a margin when using it), adapting to more DC motors. - With fine workmanship, simple in design and very practical in use, easily win your favors. Package list: 5 controller 1 x fuse