Trerice SX91403 05 Thermometer R 407A Direct Replacement: Compatible with Carrier Direct Replacement: Compatible with Carrier 58CTW and 58PHB furnace models to resolve pressure switch lockout issues Braze Ready 3 8 ODF Connections: Extended copper ends allow for direct brazing into the line set while protecting internal synthetic seating material which includes a min max temperature memory and 1% accuracy across a broad 40 to 300°F temperature range we strongly recommend using a separable thermowell for any application involving corrosive media or high pressure fluids to allow for instrument removal without draining the system