To find the right marine fuel tank sending unit: choose same brand or 100TECH. For 100TECH, use its cap model or provide tank depth, ohm range, mounting style. Unsure? Measure empty/full resistance. 100TECH team helps.

5 key factors for choosing a fuel sender: 1. Application (env, space); 2. Signal output (match gauge’s resistance: US 240-33Ω, EU 0-190Ω); 3. Tank shape; 4. Tank depth (measure & subtract 1 inch); 5. Mounting style (SAE, BSP, NPT).

Reed Switch Marine Fuel Sending unit connects to fuel gauge via wire. Float moves with fuel level, adjusting resistance to move gauge needle. Found on fuel tank top; has 2/3 connections (gauge, power, ground).

Reed switch boat fuel tank sending units work via magnetic float activating sealed contacts to adjust circuits. They’re affordable, reliable, low-power, easy to install, fuel-compatible—ideal for prioritizing reliability and budget.

To find an accurately monitored, stable, durable, easy-to-use fuel sending unit: prioritize ±5% accuracy, temperature/pressure resistance, quality materials, easy install. 100TechDirect offers such units; research and compare to choose.