Enhance the accuracy and durability of your fuel or water level monitoring system with this advanced Fuel Sending Unit, designed with a unique doughnut float type and high-quality materials for long-lasting performance. Crafted with a robust 316 stainless steel main unit and equipped with a reliable reed switch and fixed resistors, this sensor ensures dependable signal output and easy installation without the need for tank adjustment. Key Features: · Durable Doughnut Float Design: Offers superior reliability over traditional thick film swing arm type senders by utilizing a high-quality reed switch, eliminating the need for frequent tank adjustments and enhancing sensor lifespan. · Premium Materials: Constructed from heavy-duty 316 stainless steel for strong structural integrity, with PVC cable insulation and an NBR float, making it suitable for demanding marine, RV, and truck applications. · Precise Signal Output: Provides a nonlinear resistance signal ranging from 240 ohms to 33 ohms, optimized for use with standard nonlinear meters, ensuring accurate fuel or water level readings. · SAE Standard Installation: Features a standard SAE 5-hole mounting system with M5 x 0.8 screws and washers to prevent contact with the tank bottom, simplifying installation and improving stability. · Wide Compatibility: Perfect for boats, yachts, trucks, and RVs, accommodating tanks with an approximate recommended diameter of 1-1/2 inches (38 mm) for the installation aperture. · Installation Guidance: For plastic tanks, sensor length should be 1 inch (2.5 cm) shorter than tank depth; for metal tanks, sensor length is recommended to be 0.5-1 inch longer than tank depth to ensure accurate level detection. · High Protection and Durability: Rated IP67 for water and dust resistance, capable of operating in temperatures ranging from -40°F to +185°F (-40°C to +85°C), suitable for harsh environmental conditions. · Accurate Resolution: Provides a resolution range of approximately 21 mm (0.83 inches), ensuring sensitive and precise level measurement. Specifications: · Main Unit Material: 316 Stainless Steel · Cable Material: PVC · Float Material: NBR · Installation Type: Standard SAE 5-hole · Screw Size: M5 x 0.8 · Aperture Diameter: Approx. 5 mm (0.20 in) · Product Length: Approx. 8 in (200 mm) · Recommended Tank Diameter: 8.3-9 in (210-230 mm) · Sensor Type: Resistance-based fuel and water level sensor · Alarm Switch Rated Current: 500mA · Protection Class: IP67 · Operating Temperature: -40°F to +185°F (-40°C to +85°C) Package Includes: · 1 x Fuel Sending Unit This fuel and water level sensor is engineered to provide reliable, accurate measurements in marine, RV, and truck applications, combining robust construction with a user-friendly mounting system to deliver enhanced operational efficiency and longevity.