This speed controller features a delicate and practical waterproof housing, perfect for outdoor use. Comes with a screw terminal and labeled electrodes for power supply and motor, ensuring convenient wiring. The DC motor regulator input is connected to DC power; do not connect to AC, or it will burn out. Ensure correct positive and negative polarity connections to avoid damaging the regulator. Suitable for 12V motors with a power of less than 120W, 24V motors with a power of less than 240W, etc. Potentiometer resistance: B100K Input voltage range: DC 10V-60V Output voltage: 0-100% of input voltage Control power: 12V * 10A = 120W, 24V * 10A = 240W Rated current: 10A Max current: 20A Speed range: 5% -100% PWM frequency: 25Khz Size: 88 x 59 x 40mm / 3.46 x 2.32 x 1.57" Tap hole size: 8mm / 0.31" Package includes: 1 x speed controller