INKBIRD Bluetooth Smart Thermo-Hygrometer ITH-21-B, 6-in-1 Indoor Temperature and Humidity Monitor with APP Control, Custom Comfort Levels, 2 Years History Export

Bluetooth 5.0 Connectivity: The ITH-21-B adopts advanced Bluetooth 5.0 technology, so you can control it with your smartphone and remotely monitor the indoor temperature and humidity changes at an obstacle-free distance of up to 70m/230ft. You can customize the temperature and humidity comfort ranges in the app according to your family's physical quality condition, to confirm whether the indoor temperature and humidity are comfortable or not.