The experts in Automotive Lighting. Add to Favourite Shops. DC Motor Speed Controller 10-36V 80A 4000W Stepless Knob Governor With Display. DC motor speed controller for an input of 10-36V with a stepless knob and digital display. Rated at 4000W with 80A current limiting protection and 0-100% speed range. Input voltage: DC 10-36V. Current limiting protection: 80A. Speed range: 0-100%, 270 degree linear potentiometer. 1 x Speed Controller. Please check the sizes and specifications above against your requirements. PLEASE NOTE: The vehicle compatibility should be used as a guide only, on occasions there might be more than 1 option available for some vehicles. Alternatively, please refer to the technical information and dimensions provided within this listing to check compatibility before purchasing. We will dispatch your item as soon as we can. You have 28 days to return your order for any reason, as long as it is unused, undamaged and in the original packaging. Since 2008, Eurowagens are one of the leading suppliers of automotive lighting in the UK. We supply customers around the world with Genuine, OEM and aftermarket lighting parts. As lighting is our specialty, if you’re unsure of anything – we are always here to help.