Features: Black shell and White light Numbers and pointer clearly show the water temperature. Used to measure the water temperature of automobile. Measurement range is 40-120DegreeC and 100-250Degree F High sensitivity and easy operation. Specification: The shell color: Black The light color: White Power: 12V DC, Max. 0.3A Diameter: 2 inch / 52mm Outer diameter of the screen: 56mm / 2.2inch Inner diameter of the screen: 43mm / 1.7inch Read: 40-120DegreeC and 100-250Degree F Sensor Mounting Thread: 10mm / 0.4inch The wire length: 114mm / 4.5inch Package Included: 1 x Water Temp Celsius/ Fahrenheit Gauge 1 x Sensor 1 x Bolts Pack 1 x Instruction Professional Installation is highly recommended.