Feature: 1. Features: Fuel water level sensor is the direct replacement for arm type sender. The advantage of this fuel level sender is durability and reliability, and no moving parts to break. 2. Application: No adjustment needed for tank. Fuel water level sending unit support fuel level gauge and water tank gauge for boat, RV, truck. 3. Product Introduction: SAE 5 hole mounting pattern, heavy duty 316 stainless steel unit and sturdy construction. Signal output is 240 ohms‑33 ohms. 4. Using Detail: The water lever sender is with non linear output, it can only match standard gauges with non linear signals. 5. Excellent Performance: Fuel level sender is equipped with gasket, mounting screw, easy and convenient operate, accurate and precise transmission. Specification: Item Type: Fuel Water Level SensorMaterial: .Main Unit: 316 stainless steel Cable: PVC Float: NBR Mounting: Standard SAE 5 hole type Screw Size: M5 x 0.8 Hole Diameter: 5 mm / 0.20 inch Product Specification: 5in (130mm) Recommended tank size: 5.5in-6.1in (140-155mm) Output Signal: US. standard 240-33ohms (240ohms at no load, 33ohms at full load) Resolution Range: Approx: 10mm/0.39in Fuel and Water Level Sensor Type: Resistance Alarm switch rated current: 500mA Protection Level: IP67 Operating Temperature: -40°F - +185°F (-40°C -+85°C) Application: Ship, Yacht, Truck, RV Package List: 1 x Fuel Water Level Sensor5 x Screws1 x Gasket Note: Kind tips:1. This type of fuel tank sensor is 240‑33 ohm, only suitable for 240‑33 ohm fuel gauge. Please make sure your product is suitable for 240‑33 ohms before purchasing.2. When the oil level or water level is empty, there will be 3‑15mm space between the sensor float and the bottom of the sensor. This is a safe distance and the fuel sender will work fine.3. Please check the size and description of the product carefully before purchasing, if the fuel tank is plastic, the length of the gas tank liquid level sensor should be 1" smaller than the depth of the fuel tank, if the water tank is metal, the length of the liquid level sensor should be smaller than the depth of the fuel tank 0.5in‑1in.