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Extech 392050: Penetration Stem Dial Thermometer

Measures temperature in air, liquids and semi-solids

The 392050 is a Penetration Stem Dial Thermometer that has a temperature range of-58 to 302 Degrees F (-50 to 150°C) and an accuracy of +/-2 Degrees F. Ideal for use in liquids, semi-solids, and solids. It features a 5-Inch stainless steel shaft with a 2-Inch dial, an On/Off switch, and Auto power off after an hour. Meter includes 1.5V battery button and protective plastic sheath with pocket clip.



  • 5″ (130mm) stainless steel probe with 2″ (54mm) dial
  • ON/OFF switch saves battery life
  • Auto power off after 1 hour
  • Temperature: -58 to 302°F (-50 to 150°C)
  • ±2°F/1°C accuracy, 0.1°/1° resolution


Specifications Range
Display 3‐1/2 digit LCD with unit of measure indication
Measurement Range ‐58 to 302°F (‐50 to 150°C)
Auto OFF After one hour of operation
Resolution 0.1°C/F from –19.9 to 199.9°F (‐20 to 150°C)
Accuracy >20 F (1°C) from –14 to 212°F (‐50 to 100°C)
Sensor length 130mm (5.1”)
Sensor material Stainless Steel
Operating temperature 0 to 40°C (‐14 to 122°F)
Battery 1.5V LR44 (5000 hour battery life approx.)


392050 English Datasheet

392050 Multilingual User’s Manual En-Es-Fr-De-It-Pt

392050 CE Declaration of Conformity