SPECIFICATIONS Accuracy: Platinum RTD: ±0.1% @ 32°F (0°C); Nickle RTD: ±0.5°F @ 70°F (21.10°C); Balco: ±0.5°F @ 70°F (21.1°C); Thermistor: ±0.2°C @ interchangeable at 77°F (25°C). Operating Temperature: -40 to 250°F (-40 to 121°C). Probe Diameter: 1/4" (6.3 mm). Probe Length: 6" (15 cm). Cable Length: 6 ft (1.8 m). Probe Material: 304 SS. Mounting: 1/4" NPT brass adaptor.