Elitech RC-4HC USB Temperature Humidity Data Logger/ Recorder, 16000 Points Record Capacity It has a large permanent data memory of 16000 points and comes with data management software for easy data download to computers through USB interface Wide measuring range, high accuracy for Temperature and Humidity. Temperature measuring range: -30 C to +60 C; Humidity measuring range: 0 to 99%RH. Data management software & USB cable included for working with PC easily Data can be downloaded, analyzed, exported and printed conveniently Over Temperature Alarm & Upper/Lower Limits can be set