This boat fuel gauge compatible with most American Standard (240 - 33 Ohm) sending units. Applicable for Cars, Trucks, Tractors, Vehicle Diesel to Match Fuel Sending Unit for Diesel Oil/ Gasoline Level Monitoring. High sensitivity and easy operation. [High Precision and Long Life] The exterior is made of stainless steel, and the interior is controlled by highquality reed switches. The sensor is corrosionresistant, does not rust, has a long life, stable output signal, and accurate measurement. Suitable for gasoline, diesel, water, methanol, etc. [Easy to Read] The fuel level gauge has 8 adjustable backlight colors, IP67 waterproof, stainless steel frame, antifog curved glass, easy to read Empty12Full. [Easy Installation] SAE 5 hole mounting pattern, NBR material gasket, good sealing performance, high oil resistance, with M5 5 screws, 10 quick wiring terminals, easy and quick installation by referring to the wiring diagram. [MultiSize] Various sizes can be selected to meet different sizes of fuel tanks for Automobiles, Ships, Yachts, RV, Agricultural vehicles and Industrial equipment.