If you stuck your sensor to the wall before you scanned the QR code on the back, then don't worry! You can leave the sensor there and still use a QR code to install it hassle free. Simply twist the cover off the sensor counter-clockwise and you will see a copy of the QR code printed on the circuit board of the sensor. When the Notion app prompts you to scan a QR code, scan this one and the app will walk you through the rest of the installation process.
This option can be helpful too if you need to delete and reinstall your sensor for any reason after you initially set up your system.
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