Features: The Fule Level Sender and Fuel Gauge Applied for American Standard Output 240-33 ohms (240 ohms at empty, 33 ohms at full). Wide Application for Boat, Marine, Auto, RV and Truck. The exterior is made of stainless steel,This Fuel water level sensor is reed switch, durability and reliability, steady output signal. No adjustment needed for tank. Standard SAE 5 hole pattern. Mounting ease. The Fuel Tank sender is corrosion-resistant, does not rust, has a long life, stable output signal, and accurate measurement. The fuel level sender is suitable for Boat, Auto,Trucks, Buses and Marine field. Specifications: Material:Stainless Steel,Glass,Metal Protection ank: IP67 Assembly: SAE standard 5 holes Output signal: 240~33 ohm Sensor Length:150mm,200mm,229mm, 254mm,280mm,305mm,330mm can choose Package List: 1xFuel Water Level Sensor  1 x Gasket 5 x Screws  1x instructions 4xwiring terminals