Use Overfill Only Features The FloTech thermo-optic 2 wire probe is electronically and mechanically compatible for drop-in replacement of other commonly used 2-wire probes with black and white wires. Providing the fast response and reliability of optic technology in a thermistor application. 18" black and white 2 wire overfill detection probe The sensor housing contains a black and white 2 wire probe in a cast aluminum housing. The sensor housing has a 2" NPT mounting thread, heavy duty stainless steel hardware and FKM probe seal. Installation Install into either a 2" NPT threaded port or 2-3/8" diameter tank opening using the gasket and locking nut provided.
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