100mm-1000mm Marine Boat Fuel Sending Unit Tank Level Sender Sensor 0-190ohms. Blue: Signal Input Connect the signal of the fuel sender. (Adjust the backlight) You can touch the negative, the backlight will change. NOTES: This is a optional listing, please confirm the selected item before placing the order. Suitable for truck, generators/gen set, bus and marine field. Widely used in fuel, waste water. Reed switch, steady output signal. Simple 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. Fuel Level Gauge Specification. Indicating Range:E- F. 1 x 52mm Fuel Level Gauge. 1 x Fuel Level Sending Units. 1 x Instruction manual. 1 x Wiring harness. Please attention we have 6 models Level Sensor Length Range for choice. 100mm, 150mm, 175mm, 200mm, 225mm, 200mm, 250mm, 275mm, 300mm, 350mm. Material: 316 Stainless Steel. Resistance output signal: 0-190ohm(Standard European). Operational Temperature: -40°F +185°F (-40? +85?). Level Sensor Support Water Level Gauge and Fuel Level Gauge. Brown- connect to instrument signal line. The sensor can not be connected to the power supply, can not be connected to the positive electrode, does not need to be connected to the power supply, it is connected with the gauge signal directly. Empty oil level 0 ohm. Full oil level 190 ohm. We provide clear pictures, measurements where possible. Please check as much as possible to make sure the item is the one that you need. Please allow 0.5-1 inch difference due to manual measurement. Hope it is OK for you. We are committed to product quality and customer service. E-mails are answered Monday through Saturday. Please allow up to 24hours for a response to your message.