It displays both ℃ and ℉. Features a classic and minimalist design. Used to measure the water temperature in automobiles. High sensitivity with easy operation. Adds a vintage look and feel to your vehicle, constructed with high quality and lightweight materials. Compatible with all 12V car models. SPECIFICATIONS: Mounting Diameter: 2 inches (52mm) Max Diameter: 2.2 inches (57mm) Sensor Port Thread Size: NPT 1/2, NPT 1/4, NPT 3/8 Units: Degree Fahrenheit & Degree Celsius Display Range: 130-280°F & 50-140°C Working Voltage: DC 10-15V (12V) Wire Length: 1.8 meters Note: Installation guide is not included. Professional installation is strongly recommended. Please verify compatibility to ensure this item meets your requirements. Product design may vary slightly between batches, including minor color or appearance differences, which do not affect functionality. Color: As shown Material: Plastic Package Contents: 1 x Water Temperature Gauge Note: Other items not included. Lighting and display settings may cause slight color variations between the image and the actual item. Measurement error tolerance: +/- 1-3 cm.