The manufacturer code 0000-0000-0000 indicates it did not pair correctly with the hub. You need to exclude it and then pair it again, very close to the hub. If you can’t exclude it, then delete it and factory reset the device and pair it again.
after that then you need to put the device in esclusion mode and then you should see a message that the device has benn excluded.
EXCLUSION
Slide battery door open.
Remove and re-insert batteries checking the correct orientation.
Press and hold the test button. Keep it held down as you slide the
battery drawer closed. You may then release the button (AFTER FIRST SINGLE BEEP IS HEARD)
I keep wanting to get these but always worried about the reviews I’ve read with the low battery chirp coming at 70+% vs like 20% or so. Curious if that has been resolved in recent years.
And if it supports Z-Wave Plus and S2 security, don’t bypass setting it up properly by either scanning the QR code or manually entering the DSK when prompted.
I believe this is normal. To get a UL listing the detector has to beep for 30 days with low battery in case you are away for an extended period when the beeping starts. Therefore they need to reserve power for 30 days of annoying, non-stop beeping.