The Therma 1 digital thermometers are rugged and easy to use instruments that operate through the range of -100 to 1370 °C with a 0.1 °C or 1 °C resolution (dependent on model – see specification table below). The thermometers are housed in a robust ABS case that contains 'Biomaster' additive that helps to reduce bacterial growth. 

The Therma 1 feature large, easy to read, LCD displays with open circuit 'Err' and low battery indication. Each thermometer is powered by three 1.5 volt AAA batteries that gives a minimum of five years battery life. The units will power off automatically after ten minutes, maximising battery life. This feature can be disabled by the user, if required.