High-speed stepper motor has fast response speed. Clear and bright meter has adjustable 7 colors LED backlight with digital display. It is made of good quality material, durable to use. Diameter of meter is 5.2cm. The button on the mirror surface of meter can switch the light color you want. It is suitable for 12v cars. Item Name: Oil Temperature Gauge Material: Metal,ABS Operating Temperature: 40 Degrees Celsius to 140 Degrees Celsius Working Current: IGN MAX 0.3A ILM 0.3A Power Supply Voltage: DC (10-15V) 12V Professional Size Details: Diameter: 5.2cm/2" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Oil Temperature Gauge 1 x Wiring Harness 1 x Oil Temperature Sensor (Thread Size: 1 / 8NPT) 1 x Screw Button 1 x User Manual