This speed controller has a delicate and practical housing that is waterproof so you can use it outdoorsComes with screw terminal and power and motor electrode indication label for convenient wiringDC motor controller input is connected to direct current, can not be connected to alternating current, or it will be burnedMake sure the positive and negative polarity are correctly connected, otherwise the controller will be damagedSuitable for 12V motors with power less than 120W, 24V motors with power less than 240W, etc.Product descriptionFeatures:Potentiometer resistance: B100KInput voltage range: DC 10V-60VOutput voltage: 0-100% of input voltageControl power: 12V*10A=120W, 24V*10A=240WRated current: 10AMax Current: 20ASpeed range: 5% -100%PWM frequency: 25KhzSize: 88 x 59 x 40mm / 3.46 x 2.32 x 1.57Tap hole size: 8mm / 0.31Package includes:1 x speed controller