42500-EU-EN v2.0 10/13
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Introduction
Congratulations on your purchase of the Model 42500 IR Thermometer. This thermometer makes non-
contact (infrared) temperature measurements at the touch of a button. The built-in laser pointer
increases target accuracy while the backlit LCD and handy push-buttons combine for convenient,
ergonomic operation. This device is shipped fully tested and calibrated and, with proper use, will
provide years of reliable service. Please visit our website (www.extech.com) to check for the latest
version of this User Guide, Product Updates, and Customer Support.
Safety
Use extreme caution when the laser pointer beam is on
Do not point the beam toward anyone's eye or allow the beam to
strike the eye from a reflective surface
Do not use the laser near explosive gases or in other potentially
explosive areas
Meter Description
1. LCD
Display
2. Function
Buttons
3. Handle
Grip
4. IR
Sensor
5.
Laser pointer beam
6. Measurement
Trigger
7. Battery
Compartment
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2
3
4
5
6
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