Fine workmanship and safe performance. Durable in use. For automobile truck fan heater control. Can used for fan, vehicle heater fan, Defroster . Operating voltage: 12/24 V Current: 10 A Arbitrary pink : power 12V or 24V + The varied red: motor + Blue: motor - Black: power - Control velocity range: 0-100% Material: Plastic + Metal colour: As proven Package Contents: 1 x Motor Speed Controller Switch Only the above package content, different products usually are not included. Note: Light and assorted exhibits may cause the colour of the item within the photo a little bit various from the genuine thing. The measurement allowed error is +/- 1-3cm.