KKmoon Brush Motor Speed PWM Controller Adjuster with Control Switch DC 12V 24V 36V 48V 50V 30A 1500W Wide range of operating voltage: 12V, 24V, 36V, 48V, 50V, max. power: 1500W. A good speed controller for DC brush motors. 4 power tubes, high-frequency capacitance and 30A ceramic fuse are used in the module. With 200mm white cable, potentiometer for adjustment and start/stop/brake switch. Metal case creates better durability; max. power of 1500W and small noise.