Hi,
I have added several ZTH05 device.
In the devices.yaml of Z2M I have an entry for example
'0xa4c1381d7f23d37d':
friendly_name: SZ1
homeassistant:
name: SZ1 1D7F23D37D
optimistic: true
In Z2M it has the correct name:
It shows up in MQTT of HA
How can I change the device id of that device so I don’t have to look up the current id in Z2M to know witch device it is?
Thank you! 
Rename it and tick change in HA
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francisp
(Francis)
3
In the Zigbee2MQTT UI
Click the blue button
Be sure to toggle the Home Assistant button to on
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On the Z2M dashboard there should be an edit icon:
This will be propagated across to MQTT and Home Assistant.
Careful, though… If you’ve used the original device ID in automations I don’t think this will change - you may have to edit them all.
Edit: Sorry - several people beat me to it while I was cutting and pasting. Damn. 
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