The Flex-A-Lite Adjustable Temperature Controller allows you to turn your automotive fan on and off at a desired temperature depending on your driving demands. It features a dial to manually adjust activation temperature between approximately 180 to 240 degrees Fahrenheit. The fan controller comes with a radiator probe, a wiring harness, wiring and electrical terminals for most common applications using an electric radiator fan or engine cooling fan. With a 20-amp rating and compatibility with 12-volt systems only, these car parts help you adjust the activation temperature for high demand or daily driving. This auto parts fan controller comes with a one-year manufacturer warranty, providing peace of mind for car enthusiasts who demand quality and reliability.