1.For truck, generators/gen set, bus and marine field Widely used in fuel, water, kerosene and chemical tanks sensors can be used with all gauge brands that have compatible ohms. 2.Reed switch, steady output signalSimple and stronge structure , Advanced corrosion resistance Long using life, anti-vibration,anti-explosion High quality fuel level senser Economical level sensing solution, long service lifespan. Damping cover is optional, and assembled with C-ring, easy for installation 3.Without limitation of environment,length and signal can be customized recommends that a minimum 1" clearance must be maintained between the tank bottom and the float retaining collar Length: 165mm/6-1/2"(length can be customized,if you need longer than 165mm,we will charge you extra) Output Signal: 0-90ohms.