Description Fine workmanship and stable performance. in use. For car truck fan heater control. Can used for fan, car heater fan, Defroster . Operating voltage: 12/24 V Current: 10 A Arbitrary red : power 12V or 24V + The other red: motor + Blue: motor - Black: power - Control speed range: 0-100% Material: Plastic + Metal colour: As shown Package Contents: 1 x Motor Speed Controller Switch Only 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. Note: 1. Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you dont mind before ordering. 2. Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please make sure you dont mind before ordering, thank you!