Xiaomi binding upgrade from 2.1 to 2.2 - do I really need to re-declare the things?

[wars (Ward)]

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Get Identifier Xiaomi Aqara Switch

Strange that the auto discovery doesn’t find it. This device is supported in 2.1 I think… If you want to define it manually, you can lookup ythe id via the Mi Home app. Click on you Gateway, press the 3 dots in the right top corner, choose About, select Gateway information. In the 2nd part you should see all your connected devices with their names and id’s.