User Manual

45170 V1.1 5/09
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Introduction
Congratulations on your purchase of Extech’s Model 45170 4-in-1 Humidity,
Temperature, Airflow and Light Meter. With careful use, this meter will provide years of
reliable service.
Meter Description
1. Vane Airflow Sensor
2. Type K Thermocouple Input Jack
3. Display
4. Power Button
5. Unit /Zero Button
6. C°/F° /Lux/Ft-cd Button
7. Light Sensor
8. RH and Air Temperature Sensors
9. Hold Button
10. Max/Min Button
11. Function Button
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