INKBIRD ITH-11-B Bluetooth Thermo-hygrometer, Bluetooth 5.0 Temperature and Humidity Monitor, APP Remote Control, IP65 Waterproof, 2 Years Data Storage and Export

Long-term Data Storage: You can view data graphs on the app to understand changes in temperature, humidity, VPD and dew point, and export up to 2 years of historical data to your email. The device itself can store up to 300 days of offline data and upload it to the INKBIRD app when a Bluetooth connection is established. Offline data storage varies with the logging interval, which can be set to 1/2/5/10 minutes.