It can display both ℃ and ℉. Classic and minimalist styling. Used to measure the water temperature of automobile. High sensitivity and easy operation. Adds a vintage look and feel to your ride, high quality and lightweight. Fitment: For all 12V car models. SPECIFICATIONS: Mounting Diameter: 2 inches (52mm) Max Diameter: 2.2 inches (57mm) Thread Size of Sensor Port: NPT 1/2, NPT 1/4, NPT 3/8 Unit: degree Fahrenheit & degree Celsius Display Range: 130-280 Fahrenheit & 50-140 Celsius Working Voltage: DC (10-15V) 12V Professional Fitment: Universal fit for most 12V vehicles Wire Length: 1.8 meters Note: Installation guide not included; professional installation is strongly recommended. Please verify compatibility to ensure the item meets your needs. Product design may vary slightly between batches, including minor color differences, which do not affect functionality. Color: As shown Material: Plastic Package Contents: 1 x Water Temperature Gauge Note: Light reflection and different displays may cause slight color variations between the image and the actual item. Measurement error allowance: +/- 1-3 cm.