Eti therma 1t handheld thermometer eti 221 107 p the therma 1t handheld thermometer from eti utilises a type t thermocouple sensor which offers both fast response and a measurement range of 100 to 400 deg c with a 0 1 deg c resolution p p the thermometer is housed in a robust abs case containing biomaster which reduces bacterial growth the therma 1t features a large easy to read lcd display with open circuit and low battery indication p p each thermometer is powered by 3 x aaa ba