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Ultra Wide Range Laser Temperature Infrared Thermometer with K Port

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  • Not Intended for Testing Human Temperature
  • Measures high temperatures (-76 Degrees to 2732 Degrees F)
  • Optional thermocouple add-on can read surface temps
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Product Overview

Since 1910, General Tools has grown to become a recognized industry leader for specialty hand tools and instruments. The IRT850K Ultra Wide-Range Infrared Thermometer features a 50:1 distance-to-spot (D:S) ratio, a "K" port for using an optional probe to measure surface temperature, and adjustable emissivity, ideal for measuring high temperatures safely from a distance. Industrial applications include operation and maintenance of furnaces, hot water heaters or heat exchangers.
  • Extremely wide IRT measurement range of -76-degree to 2732-degreeF
  • IRT measurement accuracy of ±1.8-degreeF (typical)
  • K port measurement range/accuracy: -83-degree to 2552-degreeF / ±(2% of reading +3.6-degreeF)
  • Adjustable emissivity
  • Dual targeting lasers
  • Port for optional "K" type thermocouple for making contact surface temperature measurements
  • Releasing trigger holds measurement
  • Measurement lock mode eliminates need to squeeze trigger to take readings
  • Stores/recalls 24 data sets (measured temperature plus emissivity setting)
  • Minimum/maximum/average/different displays
  • Adjustable high and low temperature alarm set points
  • 2 in. diagonal backlit dual-readout LCD with 0.5 in. digits on main readout
  • Built-in white LED flashlight
  • Auto power off
  • Degrees C/F, lasers and flashlight on/off and backlight on/off buttons
  • Battery charge indicator
  • Tripod mount
  • Power source: two AAA batteries (not included)
  • California residents

Info & Guides

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Product Depth (in.)
Product Height (in.)
Product Width (in.)


Battery Power Type
Battery Size
Control Type
Display Type
Distance to Spot Ratio
Electrical Tools Features
Automatic Emissivity Adjustment,Backlit,Data Hold,Data Log/Record
Max Accurate Temp Measurement (F)
Min Accurate Temp Measurement (F)
Number of Batteries Required
Product Weight (lb.)
Test Meter Type
Infrared Thermometer
Tools Product Type
Test Meter

Warranty / Certifications

Manufacturer Warranty
1 Year

Questions & Answers

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Customer Reviews

  • 5
    out of 2 reviews
  • 100% recommend this product
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Showing 1-2 of 2 reviews
Made in Taiwan, not China.
Happy to see it is from Taiwan, not China. If it performs as advertised I will be very happy. If not I will write another review later. 5 stars for now ).
by forgeous
    • Recommended Product
    Great tool, performs well...
    Great tool, performs well
    by HomeDepotCustomer
    • Verified Purchase
    Showing 1-2 of 2 reviews