CO2 value missing in Apple Home: check the documented prerequisites in order, then retry only the affected path.
Start with these checks
Read the manufacturer’s feature footnote for the exact meter and bridge. Temperature and humidity may be exposed while CO2 is specifically excluded from Apple Home. Re-pairing cannot create an endpoint the bridge does not export.
- Verify vendor reading.
- Check the exact exported feature.
Stop when you find the first unmet requirement. Fix it and try pairing again before changing the next variable.
How to interpret the outcome
Current official note excludes CO2 in Apple Home.
A failed path does not prove every alternative path is unsupported. For example, a missing direct radio may still leave a separately documented bridge or cloud route.
Avoid these risky shortcuts
- Treat temperature/humidity support as CO2 support
Relevant model records
Official references
- SwitchBot — Matter sub-device support table Reviewed 2026-10-30
These are evidence-based editorial checks, not a diagnosis of your individual home network.