Nein. Nur Bluetooth.

The temperature is recorded on the thermometer and downloaded to the smartphone when the app is opened. From there, the data can be exported in CSV format.

Sure, the thermohygrometer works perfectly without wifi reception. You simply won't be able to see any data in the app without wifi.

https://internetderdinge.blog/switchbot-meter-der-temperatur-feuchtigkeits-monitor-im-test/