Once you have installed the central hub and created your account (or logged into one you created earlier), you will be able to pair the hub with the Boundary mobile app.
Once the hub is ready to be paired to your account, it will display a pairing code on the main display similar to the one below:
On the mobile app you should enter this pairing code when prompted as shown:
Once you have entered the pairing code, the hub display will change and display and confirm it is ready to accept sensors: