1 42520es Ver. 1.7 8/00
INSTRUCTION MANUAL
Model 42520
IR Thermometer
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Precise non-contact Measurements
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Switchable C/F Temperature units
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Automatic Data Hold
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Laser target pointer
1. INTRODUCTION
Congratulations on your purchase of Extech’s 42520 IR Thermometer. This professional
meter, with proper care, will provide years of safe reliable service.
2. SAFETY
Use extreme caution when the laser beam is ON.
Do not let the beam enter your eye, another
person’s eye, or the eye of an animal.
Be careful not to let the beam from a reflective
surface strike your eye.
Do not use the laser near explosive gases or in
other potentially explosive areas.
