1.5M external probe allows monitoring and recording temp and RH in hard-to-reach places. The magnet design makes installation easy and holds securely, with strong magnets on the back for support when placed on the refrigerator. Just plug the USB data logger into your PC to export temperature and humidity data reports without any additional software. It is a good choice for monitoring and recording temperature and humidity data during cold chain transportation or food storage. With the visual LCD display, you can easily track the current temperature and humidity values. the "" button to get information about maximum/minimum temperature/humidity, record quantity. Supports to mark the recorded data(6 groups). External sensor measuring range: 0% to 100% RH, -40℃ to 85℃; Temperature:Less than 2℃ or 8℃, Humidity: Less than 40% RH or 80% RH. Compliant with Part 21. Supports to set parameters(such as, calibration, log interval, etc.) through free software as It also supports comparison of temperature and humidity data graphs across multiple devices. Note: If you save parameter settings or restart the device, the data stored in the logger be cleared (but they are still saved in the software)., Weight: 0.661386786 pounds, Manufacturer: Hipzeepo