Extech 42280 Temperature and Relative Humidity Datalogger is a wall-mount, tripod mount, or desktop indoor air quality monitor with an internal memory capable of storing 16,000 readings (8000 temperature readings and 8000 relative humidity readings) that can later be transferred to PC using the USB interface. Real-time meter- to-PC logging is also supported. This meter is shipped fully tested and calibrated and, with proper use, will provide years of reliable service.
This document is the user guide for the Extech 42280 Temperature and Humidity Datalogger. It describes the instrument's features, including a large LCD display, internal memory for 16,000 readings, and alarm capabilities. The guide explains how to power the device using batteries or an AC adapter and how to view temperature, humidity, and dew point data.
| Temperature Range | -20 to 70°C (-4 to 144°F) |
|---|---|
| Humidity Range | 0 to 100% |
| Memory Capacity | 16,000 total (8000 temperature and 8000 humidity readings) |
| Power Supply | Four (4) 1.5v 'AA' batteries or 9V adaptor |
| Temperature Accuracy | 1.0°F (+0.6°C) from 0 to 50°C |
The meter can store up to 16,000 readings, consisting of 8,000 temperature and 8,000 humidity readings.
No, the audible alarm only functions when the 117V AC adaptor is connected to an AC power source.