Features [Performance Stable]: This DC motor speed regulator is reliable, stable performance, and long service life [Exterior Design]: This speed controller has exquisite and practical shells and waterproof, so you can use it outside the door [Easy to Install]: Equipped with screw terminals, and the power supply and motor electrode indicator labels are attached to facilitate wiring [Precautions]: Make sure that the positive and negative polarity is correct, otherwise the controller will be damaged. The DC motor controller inputs DC power and cannot connect AC electricity, otherwise it will be burned [Function Parameters]: Applicable to 12V motors below 120W, power below 240W, 24V motor, etc. Features: 1、This speed controller has a delicate and practical housing which is waterproof so you can use it out of doors. 2、Comes with screw terminal and a indication label of power and motor electrodes for convenient wiring. 3、DC motor controller input is connected to direct current, can not be connected to alternating current, or it will be burnt. 4、Make sure the positive and negative polarity is connected correctly, otherwise the controller will be damaged. 5、Suitable for 12V motors with power less than 120W, 24V motors with power less than 240W, etc. Specifications: Potentiometer Resistance: B100K Input Voltage Range: DC 10V-60V Output Voltage: 0-100% of the 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 Package List