We often recommend using an extra Puck as a dedicated networking device. This Puck is configured as a Gateway, connected to WiFi and plugged into power using the supplied Flair cable and adapter.
It can should be centrally located, as the other Pucks and Smart Vents will need to communicate with it. The remaining Pucks can be use batteries.
To have Flair ignore the temperature data from a dedicated networking device, place this Puck in a virtual room in the Flair app, and toggle the Active switch to set the room Inactive.