This high-accuracy, ultra-low temperature data logger is designed for monitoring vaccines in cryogenic dry ice storage. The measurement range is -100 to +100°C (-148 to +212°F) using the probe supplied with the logger. The device can record over 32,000 readings and is simple to set up using the free EasyLog software, which allows users to set their own high and low alarm thresholds, with alarm hold and delayed start features as well. Flashing lights alert users to any temperature excursions. Just plug the logger into your PC's USB port to download data which can then be graphed, printed and exported to other applications for detailed analysis.