The ETI Therma Elite digital thermometer is a rugged and easy to use instrument that operates through the range of -99 9 to 1372 C with a 0 1 C or 1 C resolution Benefits Range: -99 9 to 1372 C with a 0 1 C or 1 C resolution Minimum 5 years battery life 2-year guarantee Interchangeable thermocouple probes available Free traceable certificate of calibration included Probe not included It features a large, easy to read, LCD display with open circuit 'Err' and low battery indication Each Therma Elite is powered by three 1 5 volt AAA batteries that give a minimum of five years of battery life The units will power off automatically after ten minutes, maximising battery life This feature can be disabled by the user if required Therma Elite thermometers are housed in a robust, lightweight ABS case that contains 'Biomaster' additive that helps to reduce bacterial growth We offer a range of interchangeable thermocouple type K probes for a variety of different applications What is Biomaster? Biomaster additives are powerful broad-spectrum inorganic, silver-based biocides for use in plastics, helping to reduce hygiene risks The concentration of silver, in the patented anti-microbial active agent in Biomaster, provides a release of silver ions on demand, which in turn safely inhibits microbial growth Range: -99 9 to 1372 C with a 0 1 C or 1 C resolution Minimum 5 years battery life 2-year guarantee Interchangeable thermocouple probes available Free traceable certificate of calibration included Probe not included