Digital Process Thermometer RTD Sensor Type Temp Range (F) -328 Degrees to 1472 Degrees Temp Range (C) -200 Degrees to 800 Degrees Temp Accuracy +/- 0.1 Degrees F/C Display LCD Mounting Threaded NIST Calibration Certificate NEMA 4X Enclosure Rating Power Source One Lithium Thionyl Chloride C Battery Process Connection 1/2 in NPT 4 to 20mA DC Output 10 to 36VDC Loop Supply Voltage Safety Rating Intrinsically Safe FM Manufacturers Warranty Length 2 yr.