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 portation or food storage. 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. External sensor measuring range: 0% to RH, -40℃ to 85℃; Temperature:Less than 2℃ or 8℃, Humidity: Less than 40% RH or 80% RH. Compliant with Part 21. 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). Supports to set parameters(such as, calibration, log interval, etc.) through free software as needed. 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). Color:As Shown Material:plastic Package Contents: 1 * temperature data logger Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.