Anonymous4 years ago000Does the sensor device store the data itself and can I retrieve it via Bluetooth when I am close to the device or is this only possible via a constant WLAN?Show in original language (German)Panduin4 years ago • purchased this product000purchased this productWifi is necessary.Show in original language (German)Comment1 commentthiis_4 years ago • purchased this product000purchased this productWLAN is indispensable - the data only appears in the app if the sensor is connected to WLAN. If the Wi-Fi fails, data gaps occur.Show in original language (German)Comment1 comment