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Extech 42542
High Temperature IR Thermometer

  • High Temperature range from -58°to 1832°F (-50 to 1000˚C)
  • 30 to 1 distance to target ratio measures smaller surface areas at greater distances
  • Adjustable high/low alarm alerts user visually and audibly when temperature exceeds programmed limits
  • Adjustable emissivity for better accuracy on different surfaces
  • MIN/MAX/AVG/DIF features display highest, lowest, average, and MAX minus MIN values
  • Large backlit display allows for taking measurements at night or in areas with low background light
  • Laser pointer identifies target area
  • High resolution of 0.1º up to 199.9º
  • Automatic Data Hold when trigger released
  • Auto power off
  • Complete with 9V battery and hard carrying case
Click here for a larger image - Extech 42542 HI Temp. IR Thermometer; 30:1!Click for larger image
Extech 42542 Shown
Product Information
Datasheet 885 KB
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Range -58 to 1832°F (-50 to 1000°C)
Basic Accuracy ±2% of rdg or 4°F/ 2°C whichever is greater <932°F (500°C);
±(2.5%rdg + 5°)>932°F (500°C)
Max. Resolution 0.1°F/°C
Emissivity 0.1 to 1.00 Adjustable
Field of View
(Distance to Target)
Dimensions 3.9 x 2.2 x 9" (100 x 56 x 230mm)
Weight 10.2oz (290g)
Ordering Information


Buy Online Price
42542 Extech 42542 High Temperature IR Thermometer  Discontinued
42542NIST  Extech 42542-NIST HI Temp. IR Thermometer w/ NIST Certification Discontinued

Included Accessories

  • 1 - 9V button battery
  • 1 - Hard Carrying Case

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