Features: 1.52mm/2in water temperature gauge with celsius unit, and the measuring range is 40?140. 2.Smoke tint lens+red pointer needle+clear number, creates stylish appearance, make it easy to read. 3.Universal water temp meter with bright LED display, allows you to read even during the night. 4.Compact design and cool surface, can enhance your car interior a racing look and sense. 5.High accuracy and easy operation, lightweight enough for easy installation and convenient using. Specification: Item Type: Water Temperature Gauge_x000D_ Material: Plastic_x000D_ Diameter: Approx. 52mm/2in_x000D_ Lens: Smoke Tint Lens_x000D_ Pointer: Red Illuminated Needle_x000D_ _x000D_ Display: LED Super White Display_x000D_ _x000D_ Power: DC(10-15V) 12V Professional_x000D_ _x000D_ Measure Range: 40-140_x000D_ Sensor Thread: 1/8_x000D_ _x000D_ Diameter of Water Temperature Sensor: 1/8NPT_x000D_ Unit: Celsius()_x000D_ _x000D_ _x000D_ _x000D_ Wiring:_x000D_ Red-Positive_x000D_ Black-Negative_x000D_ Green-Signal Line