[High Grade Material:] This PWM Motor Speed Controller is made of premium quality circuit board material, which has a good durability and wear-resistance to a long term service, you can use it for a long time [Easy 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 easily [LED 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 easily [Wide 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 purposes [Stable 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 performance Material: ABS colour: As shown Package Contents: 2 x Speed Controller Only the above package content, other products are not included. Note: Light reflection 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.