Extech IRT25 Infrared Thermometer with Audible Alarm
Extech IRT25 Infrared Thermometer with Audible Alarm


The IRT25 is a compact infrared thermometer that allows non-contact measurements from -4 to 700 degrees Fahrenheit. The IRT25 has a 12:1 band ratio and high/low audible alarms. It features a large backlit digital LCD display, longer range, data storage, and maximum and minimum measurement modes. This product is CE marked, has a three-year warranty and comes complete with manual and two AA batteries.

Extech IRT25 Infrared Thermometer

Quickly identify circuit breaker board hotspots and troubleshoot HVAC problems with the Extech IRT25 non-contact infrared (IR) thermometer. The temperature reaches 700°F (371°C) and the built-in laser pointer marks the target area and improves aiming. Adjustable emissivity improves accuracy when measuring the temperature of different surface materials.

Improve energy efficiency in your home

Use the IRT25 to measure the surface temperature around doors and windows to easily detect power outages.

electrical examination

Quickly measure the temperature of circuit breakers and other electrical and electronic equipment to identify potential problems and prevent injury.

Heating, ventilation and air conditioning

Measure the efficiency of HVAC systems by measuring the surface temperature of vents, ducts, and system components.

Car Diagnostics

When working on your vehicle, be careful not to touch any hot equipment. Use the IRT25 to determine the engine, brake or exhaust temperature before starting.


  • Take non-contact temperature measurements quickly from -4 to 700 degrees Fahrenheit (-20 to 371 degrees Celsius).
  • Built-in laser pointer identifies target area, programmable high/low alarms, visual and audible user alerts if temperature exceeds set limits (audio alert can be disabled)
  • A bright white backlight illuminates the screen for taking measurements at night or in areas with low backlight
  • Automatic data retention and storage of Max/Min function allows for easy retrieval of Max and Min readings
  • IRT25 comes with two AA batteries

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