Most Flair systems need only one Gateway Puck. There are a few reasons why you may need more than one Gateway Puck.
Large Systems
For systems using more than 16 Flair devices (Pucks and/or Vents combined) more than one Gateway Puck may be needed (including systems that use only Pucks). If you think you may have a large system, our large system calculator can help you determine the minimum number of Gateway Pucks you'll need: flair.co/large-systems.
Offline Pucks and/or Vents
All Smart Vents and Sensor Pucks need to connect to a Gateway Puck over the Flair network (radio signals). The Gateway bridges these devices on the Flair network to the internet. If Smart Vents or Sensor Pucks are offline, have a weak signal, or go offline frequently, try moving a Gateway closer to see if it comes back online. If so, then add another Gateway Puck or convert a Sensor Puck to a Gateway Puck.
Adding Another Gateway Puck
You can add a new Gateway Puck or convert an existing Sensor Puck to a Gateway Puck. Plug the Puck into power using the supplied cable and adapter. Then tap the PLUS menu and select "Add new Gateway Puck" and follow the Gateway Setup.