The cover is made of stainless steel, corrosion resistant High temperature resistance, chemical resistance, abrasion resistance, IP67 waterproof and dustproof grade The meter comes with an alarm signal and does not require an additional alarm signal from the sensor. High brightness LED for backlight, high brightness and long service life Name: 52mm Universal Fuel Level Gauge Fixing Dimension: 52mm (2 inch) Indicating Range: E-1/2-FULL Working Voltage: 9-32V(12V/24V) Material: 316L Stainless Steel Bezel+Anti-fog Glass Color: Black Material: Stainless Steel Package Contents: 2 x Fuel Level Gauge 2 x Multi-plug Socket 2 x Instruction Chinese and English Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in a little different from the real thing. The measurement allowed error is +/- 1-3 cm.