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Dual Laser IR Thermometers – Extech


Extech Dual Laser IR Thermometers for quick accuracy in target areas. Two laser pointer converge to a 1” target spot. Model 42509 (-4 to 950°F), with color alert and high/low alarms, Modle 42511 (-58 to 1100°F), with 12:1 field of view and Model 42512 (-58 to 1832°F) with 30:1 field of view.  All have backlit LCD displays.

The 42509 is a Dual Laser IR Thermometer with Color Alert. Meter has dual lasers for quick accuracy in the target area and programmable High/Low alarms. Measures up to 950°F (510°C). Automatic blue backlit dual LCD display. Adjustable emissivity increases measurement accuracy for different surfaces. Complete with case and 9 Volt battery

The 42511 is a Dual Laser IR Thermometer. Meter indicates the ideal measuring distance. Featuring a 12:1 distance to target ratio where two laser points converge to a 1 in. target spot. Displays continuous and held data on a white backlit dual LCD display. Temperature ranges from -58 to 1100°F (-50 to 600°C). Complete with pouch case and 9-Volt battery. CE certified

The 42512 is a dual laser IR thermometer. This IR thermometer features dual lasers for accurate targeting with a fast (0.15s) response time and has a backlit dual LCD display. Temperatures range from -50 to 1000 Degrees Celsius (-58 to 1832°F). Complete with pouch case and 9V battery. CE certified.


  • Two laser pointers converge to 1″ target spot
  • Measure to 1800°F (1000°C) with 1° resolution
  • 12″ or 30″ laser convergence distance
  • Fast 0.15 second response time
  • White backlit dual LCD display
  • Adjustable emissivity increases accuracy
  • Lock function for continuous readings
  • Adjustable high/low setpoints with audible alarm alerts
  • Complete with 9V battery and carrying case
Extech Dual Laser IR Thermometers Specs

Catalog Page 152         42509 DS                    42511_42512 DS

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products found
Item # Description Range Temperature (F) Range Temperature (C) Field of View Basic AC/DC Accuracy
EX/42509Dual Laser IR Thermometer - 12" Convergence w/Color Alert-4 to 950-20 to 51012:1±1% of reading ± 2°F / 1°C
EX/42512Dual Laser IR Thermometer - 30" Convergence-58 to 1832-50 to 100030:1±1% of reading ± 2°F / 1°C
EX/42511Dual Laser IR Thermometer - 12" Convergence-58 to 1100-50 to 60012:1±1% of reading ± 2°F / 1°C
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