Difficulty adding devices since ZBT-2 installed

Configuration Zigbee
1

I have recently updated from Conbee II to ZBT-2.
I am using ZHA
The migration to ZBT-2 went well but i had to readd a couple of devices over the first 48 hours which in some cases required several attempts. Now it has settled down over the last few weeks and is operating well.

Today I wanted to add another device , an Aqara PIR sensor so i put Zigbee into Add Device mode and is says searching then I depress the button on the sensor for a few seconds and it flashes as normal but no connection appears to be made. I am about 3 meters from ZBT-2.

I retry several times, then try connecting an Aqara switch, same result,
So I try reconnecting a connected device (door sensor, presence sensor and another Aqara PIR) and still get no response.

I have tried restarting and rebooting HA, disconnecting and reconnecting ZBT-2.

The ZBT-2 firmware is up to date

But the little circle just keeps going round and round

Any assistance or suggestions on what to try next would be appreciated

I do see this in the log, not sure if it is related
2025-12-25 15:41:24.957 DEBUG (MainThread) [zigpy.application] Failed to send packet, attempt 2 of 3
Traceback (most recent call last):
File “/usr/local/lib/python3.13/site-packages/bellows/zigbee/application.py”, line 1095, in send_packet
send_status, _ = await future
^^^^^^^^^^^^
asyncio.exceptions.CancelledError

The above exception was the direct cause of the following exception:

2

Try resetting the PIR and remove the battery. Restore the battery, reset again, and see if it pairs.

This has worked for me when I had similar trouble.

3

Thanks Bob

Tried that also and that dosent explain why 4 other devices wont connect or reconnect.

Also im seeing this activity in the ZBT-2 that looks odd

Screenshot from 2025-12-25 23-24-15
Screenshot from 2025-12-25 23-24-15274×456 31 KB

4

I had not noticed that until you pointed it out, but my ZBT-2 activity showing the same thing appears to align with my rebooting HA.

Not sure what to say about your other devices. :frowning:

5

Aqara devices can be finicky to add and can take multiple attempts. Took me 10min today to pair a luminescence sensor from Aqara. Once paired they do seem to work flawlessly for me.

Best is to look online to see how others managed to pair them. Seen tips to start pairing and press the button ones a second to keep the battery powered devices alive.

Devices becoming “Unavailable” is indeed from Home Assistant restarts. If not it could be connection drops and you have to see if there is any interference.