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"/6.3mm O.D, 0.020" / 0.5mm wall 304 Stainless Steel Enclosure: Die cast aluminum alloy A360 Operating Temp: -40F/-40C to 210F/100C Ambient Temp: -40F/-40C to 160F/70C Weight: 5.6 oz (159 g) Conformance & Testing RoHS Compliant EMC Testing: BS EN 55022:1998, BS EN 55024:1998, EN 61000-3-3, EN 61000-4-2, EN 61000-4-3, EN 61000-4-4, EN 61000-4-5, EN 61000-4-6, EN 61000-4-11