The Zirgo ZFSWFK temperature control switch-sensor will automatically turn on your Zirgo cooling fan at the preset temperature of 180 degrees Fahrenheit, Zirgo switch-sensors are ideal for all types of vehicles, Available in a fixed (180) temperature setting, To ensure a consistent operating temperature for your vehicles engine be sure to install a Zirgo Temperature Control Switch-Sensor, INCLUDES PLUG IN HARNESS SKU: DSD446148