[Joe Nelson](https://support.flair.co/hc/en-us/profiles/373232286511-Joe-Nelson)

- 7 years ago

### How many smart vents can be added to each ecobee sensor or Puck?

[Yes](https://flair.zendesk.com/access?locale=en-us&brand_id=809367&return_to=https%3A%2F%2Fsupport.flair.co%2Fhc%2Fen-us%2Fcommunity%2Fposts%2F360032309131-Vent-sensor-attachments "Yes") 0 [No](https://flair.zendesk.com/access?locale=en-us&brand_id=809367&return_to=https%3A%2F%2Fsupport.flair.co%2Fhc%2Fen-us%2Fcommunity%2Fposts%2F360032309131-Vent-sensor-attachments "No")

### Comments

- Official comment

**John Bartlet**

- 7 years ago  
  - Edited

Hi there,

The maximum is around 15. After 15 Smart Vents on a single Puck, you will require a second Gateway Puck (a plugged-in Puck). We call these systems "Large Systems," and you can find out more information about them here: [https://flair.co/pages/large-systems](/content/pages/large-systems/index.html)

Thanks!

[James Downing](https://support.flair.co/hc/en-us/profiles/370960336391-James-Downing)
  - 7 years ago

Joe, I'm sure there's a theoretical limit, but I don't see any limits within the app itself.