United Electric (UE) P/N 1XTX00TTR1-W080, -40 to 450 F Range, Remote Bulb Sensor, 2.5" Sensor Length, 2-Wire 4-20mA HART Output, 20-40 VDC Loop Power Supply, Backlit LCD Display, 6 Ft. Extension with 1/2"NPT Union for 0.188" O.D. Extension, Explosion Pro