12.5in Universal Water Temperature Meter: Used to monitor and display the temperature of the coolant flowing through the radiator system. 2Accurate Display: 100 ?300 Fahrenheit water temperature reading, accurate and stable parameter display, low power consumption. 3Red LED + White Background: 24 red outer LEDs for quick reference to engine parameters. Digital display, visual observation. 4Programmability: 2 buttons on the faceplate deliver programmability for peak/recall, standard or metric center LED readout and sweeping LED needle, and user selectable threshold warnings. 5Smarter Interface: The digital meter includes new technical features to make it easier to use. Support setting alarm points and peak memory. 6Easy to Install: With a slim total depth of 1.12in, this gauge can be installed almost anywhere, no need of complicated operations.