Sense Hub v1 and v2: how to identify?

[SlabSlayer]

@Vegha

So the question still remains open: how can I identify - before purchasing second hand

There is no such thing as a Wyze Sense Hub V1 or V2. The picture you posted is a Wyze Sense Hub.

Wyze V1 Sensors, the original ones that have been discontinued and are no longer supported, are controlled thru a Wyze Sense Bridge.

The Wyze V2 Sensors, like the Climate Sensors you seek, are controlled thru the Wyze Sense Hub