When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Shown mounted over my scanner and rear view mirror. I use it to control my auxiliary fan.
Not made for automobiles, but it runs on 12VDC and is perfect for controlling temperatures. Not only does it give a digital temperature display, it allows you to set the exact on & off temperatures plus has an on indicator. Can be set to alarm at a specfic temperature as well. $43.29 and solidly made is the USA.
Can be used on main fans, oil/transimission coolers, electric water pumps, electric coolant valves.