I have this: Woox R7052 Smart SOS Button
and it’s not supported by Zigbee2mqtt 
WARNING: Received message from unsupported device with Zigbee model ‘TS0215A’ and manufacturer name ‘_TZ3000_ssp0maqm’
Device model is: Woox R7052
Any chance to do something about this ?
Well yes you could follow the guide to add an unsupported device. But as a shortcut, googling seems to reveal it is similar to the _TZ3000_zsh6uat3 which is supported in z2m.
So should be an easy add.
I’m not so familiar with the custom external definition, but … I’ve seen that zigbee2mqtt supports this: TuYa TS0215A_sos control via MQTT | Zigbee2MQTT
while mine is seen as TS0215A … altough is also a SOS button … Can I somehow link it to TS0215A_sos ?
No, not as far as I know. I mean it may be very similar, but you have to add a definition.
Well previously you had to, but z2m released a new feature today.
This release contains a quite fundamental change on how Zigbee2MQTT handles unsupported devices.
Zigbee2MQTT will now attempt to automatically detect features supported by the device and discover those to e.g. the frontend and Home Assistant.
This means that if you, for example pair an unsupported light, there is no need to wait for official support. Basic features will work out-of-the-box.
The way to officially add support for devices has also been simplified due to this (docs). These changes have been made in #6692 and #20358.
