The Extech 39240 Waterproof Stem Pocket Thermometer with stainless steel stem is pocket sized for convenience with a digital display featuring 0.1° resolution and min/max recording. It measures temperature in frozen solids and liquids using the 2.75 in. (70 mm) stainless steel stem. Temperature measurements from -40 to 392°F (-40 to 200°C). MAX/MIN recall of high and low temperatures as well as Data Hold and Auto power Off features. CE certified.