• 39240
  • Usually ships in 3-5 business days



  • 2.75" (70mm) stainless steel stem
  • °C/°F switchable ranges of -40 to 392°F (-40 to 200°C)
  • MAX/MIN recall of high and low temperatures
  • Data Hold and Auto power Off features
  • Digital display with 0.1° resolution
  • Dimensions: 5.9 x 0.8 x 0.7" (150 x 20 x 18mm)
  • Weight: 0.7oz (20g)


The Extech 39240 waterproof thermometer is ideal for measuring temperature in frozen solids and liquids. The waterproof housing allows the meter to be completely submerged in water. Being pocket size (0.7 ounces), the Extech 39240 is perfect for taking measurements in the field and its plastic cover ensures protection during storage and transportation.

With a 2.75" (70mm) stainless steel stem, the Extech 39240 waterproof thermometer is switchable between °F and °C and measures temperature from -40 to 392°F (-40 to 200°C). The digital display offers 0.1° resolution, a MAX/MIN function which allows the user to recall high and low temperatures, as well as data hold and auto power off features.

The Extech 39240 waterproof thermometer ships complete with:

  • LR44 button battery
  • Protective cover


This product can be used in the following applications: