It is microprocessor controlled. It has 50-350 Fahrenheit degree range of accuracy. It works with any vehicle. It is precise, super bright, and intelligent all in one. Features include: 2 1/16 inch diameter, only 1 1/2 inch deep; Automatic night-dimming; Sending unit (S8013) included (Please note if you need a 3/8" bushing because we send the more common 1/2" bushing--otherwise, you will have to supply the bushing on your own); and In-dash mounting hardware! Lifetime warranty! Made in the USA!