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 (supplied with one probe)

*only one probe is included with the device.