Extech TM20
Temperature Indicator w/probe

  • Audible and visual alarm alerts
  • Fast response sensor measures temperature in liquids, semi-solids, and air
  • LCD displays Temperature reading, alarm indicator and high or low alarm icons
  • ±1.8°F/1°C basic accuracy with 0.1° max resolution
  • Displays Min/Max reading with reset function
  • Data Hold freezes current reading on display
  • Low battery indication
  • Waterproof housing and sensor designed to meet IP65
  • Unit has magnetic back and can be mounted on a metal surface, used on a desktop with included foot stand, or wall mounted
  • Sensor measures Temperature from -40°F to 158°F (-40°C to 70°C)
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Extech TM20 Shown

Product Information
Datasheet 200 KB PDF
Manual 248 KB PDF
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The Extech TM20 is a Temperature Indicator with probe that can be used on desktops with its removable foot stand. The Extech TM 20 can be mounted on wall or metal surfaces with its magnetic back.
Ordering Information
Model  Description Buy Online Price
TM20 Extech TM20 Temperature Indicator w/probe Buy Now Sale $16.99
(Reg. $19.99)
Included Accessories
  • 1- Product Manual
  • 1- Magentic Back
  • 1- Foot Stand
  • 1- Temperature Sensor with 9.2 ft (2.8 m) Cable
  • 1- 3V Button Battery
  • 1- 0.78" (20 mm) Stainless Steel Probe with 9.2 ft (2.8 m) cable

*NOTE: Items ordered with optional NIST calibration will require
approximately 10 days to complete the certification.