Usage Tips:It can display both ℃ and ℉. Classic and minimalist styling. Used to measure the water temperature of automobile. High sensitivity and easy operation. Add a vintage look and feel to your ride, and light weight. Fitment: For all 12V car models. SPECIFICATION: Mounting Diameter: 2inch (52mm) Max Diameter: 2.2inch (57mm) Thread Size of Sensor Port: NPT 1 or 2,NPT 1 or 4,NPT 3 or 8 Unit: degree Fahrenheit and degree Celsius Display Range: 130-280 Fahrenheit and 50-140 Celsius Working Voltage: DC(10-15V) 12V Professional Fitment: Universal fit for most 12V Vehicles Length of Wire:1.8meter Note: Installation guide not included, we strongly recommend you professional installation. Please check as much as possible to make sure the item is what you need. Tips: The product may be updated constantly ,Due To Different Batches, The Actual Product May Have Slight Differences Or Color Differences, Which Does Not Affect Use Color: As shown Material: plastic Package Contents: 1 x Water Temp Gauge Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm.