Stik Fixed Resistor Thermometer, Sensor Type: 100 OHM Thin-Film RTD, Temperature Range: -50 to 160 DEG C, Accuracy: Plus/Minus 0.05 DEG C, Resolution: 0.01 For Temperature, Response Time: 4.8 MM Diameter Probe (3/16 IN): 14 S 6.35 MM Diameter Probe (1/4 IN): 21 S, Display Units: DEG C, DEG F, Sample Rate: 1 S, Power Source: (3) AAA, Typical Battery, Display: LCD Backlight, Protection Rating: IP50, Material: Stainless Steel Sheath, Dimensions: 4-1/2 IN Height X 2-1/4 IN Width X 1 IN Depth, Communications: RS-232 Stereo Jack (Access Calibration Parameters Only), EN61326:2006 Annex C, CISPR II Edition 5.0-2009, Class-B