Feature: 1. APPLICABLE SCENES: Fuel sending unit, suitable for oil, water and any liquid without impurities, for ships, cars, trucks, buses and marine fields. 2. DRY REED TUBE: The water level sensor is dry reed tube design, durable and reliable, with stable output signal, no need to adjust the water tank. 3. STAINLESS STEEL: Made of heavy 316 stainless steel, which is rustproof and corrosion resistant, and can be used in various harsh environments. 4. OUTPUT SIGNAL: With EU standard 0-190 ohms output signal, 0 ohms at no load, 190 ohms at full load, with high resolution and accuracy. 5. EASY TO INSTALL: Equipped with screws and gasket, standard SAE 5 hole type, the fuel water level sensor is easy to install and replace. Specification: Item Type: Fuel Water Level Sensor Body Material: 316 Stainless Steel Cable Material: PVC Float Material: NBR Installation Method: Standard SAE 5 hole type Screw Size: M5 x 0.8 Aperture: Approx. 5mm / 0.2in Product Specification: Approx. 230mm / 9in Recommended Water Tank Size: Approx. 240-255mm / 9.5-10in Output Signal: EU standard 0-190 ohms (0 ohms at no load, 190 ohms at full load) Resolution Range: Approx. 21mm / 0.8in Fuel and Water Level Sensor Type: Resistance Alarm Switch Rated Current: 500mA Protection Grade: IP67 Operating Temperature: -40℉ to 185℉ (-40℃ to 85℃) Applicable: Ships, yachts, trucks, RV. Package List: 1 x Fuel Level Sensor5 x Screws1 x Gasket Note: The transmitter shall not touch the bottom of the tank. If it is a plastic tank, the length of the transmitter shall be 1 inch less than the depth of the tank. If it is a plastic tank, it shall be 0.5 inch less than the depth of the tank.