Specifications Platinum RTD Sensors: +/- 0.1% @ 0 C, Alpha: 385 per DIN 43760 Nickel RTD Sensors: (#2) +/- 0.5 C @ 0 C, 5000 PPM/K T.C.R. Nickel RTD Sensors: (#4) +/- 0.5 F @ 70 F / 21.1 C, 6000 PPM/K T.C.R. Balco RTD Sensors: +/- 0.5 F @ 70 F / 21.1 C, 4300 PPM/K T.C.R. Thermistor Sensors: +/- 0.2 C interchangeability @ 77 F / 25 C Probe Material: 1/4” / 6.3 mm O.D, 0.020” / 0.5 mm wall 304 Stainless Steel Flange Material: Galvanized Steel Operating Temp: -40F/-40C to 210F/100C Ambient Temp: -40F/-40C to 160F/70C Warranty: Five Years (Lifetime on Moisture Migration) EMC Conformance: EN 55022, 55024, 61000-3-3, 61000-4-2, 3, 4, 5, 6 & 11 RoHS Compliant U.S. PATENT NO. 6457857, 7036224