1、Standard dial for a 2-1/16\" (52.4mm) opening and requires 12-volt negative ground systems. 2、The fuel level gauge will accurately display fuel level remaining in your gas tank. It\u0027s ideal for anyone who is building a custom dash or looking to replace their stock fuel level gauge. 3、Suitable for 240-33ohm signal fuel level sensor properly. 4、Used to measure the fuel level of automobile.Gauge is lighted.Backlit illumination for night use. 5、High sensitivity and easy operation. Features: Standard dial for a 2-1/16" (52.4mm) opening and requires 12-volt negative ground systems The fuel level gauge will accurately display fuel level remaining in your gas tank. It's ideal for anyone who is building a custom dash or looking to replace their stock fuel level gauge. Suitable for 240-33ohm signal fuel level sensor properly. Used to measure the fuel level of automobile.Gauge is lighted.Backlit illumination for night use. High sensitivity and easy operation. Specification: Shell color: white Outer ring: black Material: plastic Power supply: 12V Resistance: 240-33ohm Diameter: 52mm\2" Measuring range: 0-1 Light: white light Package size: 9 * 7 * 7cm Package weight: 110g Packing List: 1 * Fuel Level Gauge（with Fittings） 1 * Fuel Level Gauge（with Fittings）