Lascar EL-GFX-D2 Temperature & Humidity Data Logger, USB

This dual channel data logger measures and stores over 250,000 temperature and relative humidity readings using up to two external temperature & humidity probes*. It has user-programmable, audible alarm thresholds with confidence/alarm LEDs. Its high contrast, dot-matrix LCD with three face-buttons for navigation gives real-time trend analysis, data summaries and the ability to start, stop and restart the data logger without connecting to a PC. EasyLog USB software enables quick configuration and data download via the USB port. Supplied with two lithium batteries, which can typically allow logging for up to 1 year. It can also be powered from USB.

Logging rates between 10 seconds and 1 hour
Stores over 250,000 readings per channel for temperature and humidity
User triggered logging mode
Up to two channels supported