Description: This is a simple and easy-to-use DC motor speed controller of small size, elegant appearance and stable performance. It is made with circuit board which ensures a longer service life. The input voltage can be DC 10V to 60V and output voltage is 0- of the input voltage. This speed controller is quite convenient to set. Features: This speed controller has a delicate and practical housing which is waterproof so you can use it out of doors. Comes with screw terminal and a indication label of power and motor electrodes for convenient wiring. DC motor controller input is connected to direct current, can not be connected to alternating current, or it will be burnt. Make sure the positive and negative polarity is connected correctly, otherwise the controller will be damaged. 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- of the input voltage Control Power: 12V*10A=120W,24V*10A=240W...... Rated Current: 10A Max Current: 20A Speed Range: 5%- 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 1This speed controller has a delicate and practical housing which is waterproof so you can use it out of doors 2Comes with screw terminal and a indication label of power and motor electrodes for convenient wiring 3DC motor controller input is connected to direct current, can not be connected to alternating current, or it will be burnt 4Make sure the positive and negative polarity is connected correctly, otherwise the controller will be damaged 5Suitable for 12V motors with power less than 120W, 24V motors with power less than 240W, etc Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.