Locate "mystery" ZigBee or ZWave devices

OK, I admit, it will be a strange question :slight_smile:

I have lots of devices in my network and most are documented in various ways (naming, excel, etc…).

Nonetheless, I found some devices in my network and I have no clue where they could be.
I know their type and protocol… yet I need to locate them and I guess it would be good to do it for the battery powered devices, before the battery runs out.

One of them is a (ZigBee) NOUS A1Z. This one sounds like an easy one. I know it is only (at least OH reports so), I can toggle it but was not able to hear the relay.

The second is more tricky: Zwave Fibaro FGDW002. It is a door/window sensor.
Again, the obvious would be to open all doors/windows. My sensors shows an OPEN state.

Describing this issue, I realize I could have a look at the zwave map and see which other nodes are “in proximity”. That actually could help.

Did anyone also stupidly did not label devices properly and ran into such a scenario ?

It looks like I will need to work with that:

I actually suspect those devices I am hunting, simply ghost ones.
They likely used to exist. It remains suprising that they still show as online though.