Usage Tips:Features: 1.For Fuel Sending: This fuel sending unit can better monitor the fuel level and ensure stable fuel flowing, thus facilitating stable power. 2.Practical Using: Widely applied to ships, cars, trucks, etc., ideal for oil level gauge, water level gauge and any liquid without impurities. 3.Higher Accuracy: The output signal is EU standard 0?190 ohms, and the resolution accuracy is 10mm, and the sending unit has alarm switch. 4.Stainless Steel: Consisting of 316 stainless steel main body, PVC cable and NBR float, the 5in fuel sending unit is very durable for using. 5.Easy to Install: Comes with a compact size and a light weight, the convenient installation can be quickly completed within 15 minutes.Specification:Item Type: Boat Fuel Sending UnitBody Material: 316 Stainless SteelCable Material: PVCFloat: NBRInstallation Method: Standard SAE 5 hole type. Screw Size: M5 x 0.8Aperture: Approx. 5mm/0.20inProduct Specification: Approx. 125mm / 5inRecommended Water Tank Size: Approx. 135 ~ 150mm / 5.31 ~ 5.91inOutput Signal: EU standard 0-190 ohms. 0 ohms at no load, 190 ohms at full load. Resolution Range: Approx. 10mm / 0.39inFuel and Water Level Sensor Type: ResistanceRated Current of Alarm Switch: 500mAProtection Grade: IP67Operating Temperature: -40 ~ +185, that is -40 ~ +85. Application: For ships, yachts, trucks, RV. PackageList:1 x Fuel Level Sensor5 x Screw1 x Washer