Material: Body: SUS 316 Stainless Steel Float: NBR Cable: PVC Mounting Method: 1.5″ NPT (National Pipe Thread) Protection Rating: IP 65 Output Signal: American Standard 240-33 ohms (240 ohms at empty, 33 ohms at full) European Standard 0-180 ohms (0 ohms at empty, 180 ohms at full) Voltage (V) output available upon request Current (mA) output available upon request Customized output curve available upon request Resolution: 21mm Finer resolution (as low as 10mm) available upon request Operation Temperature: -40°F ~ +185°F (-40°C ~ +85°C) Operating Voltage: 12VDC or 24VDC system. The sender draws power through the signal wire. Rated Power Draw: 125mW Length: American Standard Output – 4″ through 96″ at 1″ increments European Standard Output – 100mm through 2500mm at 50mm increment Additional Information: Sending Unit Installation Guide Troubleshooting Guide Please note that we recommend a 1″ clearance from the bottom of plastic tanks and a 0.5″ clearance from the bottom of stainless/aluminum tanks.