Yes, that is correct. You cannot read the updated data from the thermometer (temperature and humidity) from work, but only near the device via Bluetooth. The data is transmitted via the Govee Home app, which you need to install on your smartphone. As long as you are within range of the Bluetooth signal, you can view the data via the app. If you are not near the device, you will not be able to view the data in real time unless there is another connection option that is not described in your model.