Need to monitor the environment in a warehouse, server room, or during shipping? This handy little data logger does it all. It automatically records both temperature and humidity with great accuracy (±1°C, ±3% RH). It measures from -40°C to 105°C (-40°F to 221°F) and 0-100% humidity. It also calculates heat index and dew point! It stores up to 80,000 data points and connects to your computer via USB to download the data into PDF or spreadsheet formats. The software lets you set alarm limits, adjust the recording interval from 1 second to 24 hours, and analyze the graphs. It's powered by 2 AA batteries (not included), has a backlit display, and is super compact. Perfect for food storage, HVAC monitoring, museums, or anyplace where tracking climate is critical. Just set it, forget it, and check the logs later.