High Grade: This PWM Motor Speed Controller is made of premium quality ABS material, which has a good durability and wear-resistance to a long term service, you can use it for a long timeEasy Installation and Operation: This Motor Speed Controller adopts with screw terminals for convenient and quick wiring, and it also comes with an adjustable momentary start/stop switch and a speed control potentiometer to an easy and convenient control, you can control it easilyLED Display Design: This DC Motor Speed Controller designed with a a digital display, which shows percentage rate of actual speed to maximum speed, so the data is readable through the LED display, you can get a precise data easilyWide Input Voltage Range: This PWM DC Motor Speed Controller supports a widely input voltage from DC 6V to DC 60V, and it fits to 12V 24V 36V 48V power supply, at the same time the output current is 0A-30A, which ensures a widely application. You can use this Adjustable Motor Controller in different occasions upon different purposesStable Performance: This simple and easy-to-use Motor Controller has an stable performance, and it has a momentary start/stop switch and a speed control potentiometer for easy operation, you can regulator it through the potentiometer to provide a better and stable performanceOutput Voltage: Linear with loadContinuous Current: 20ASpeed Range: 0% to 100%Regulation : PotentiometerRegulation Type: Regulating CurrentControl Frequency: 15KHzWiring Type: Screw terminalcolour:Material: ABSSize: 9.6x6.1x3.4cmPackage Contents:1 x PWM DC Motor Speed ControllerOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.