I recently bought a used SmartThings Hub v2 along with two multipurpose sensors and a motion sensor (the squared one with the sensor in the corner).
The problem I have is that all these sensors have an astonishingly short range. They work pretty much ok if they are in the same room, but as soon as I put them behind a wall (any wall), even if it is 1 metre away, they completely stop reporting.
I live in the UK and here internal walls can be bent by blowing at them, so I really doubt that they are able to block radio waves so effectively. Also, I have other wireless devices (Hue) all around the house that have no problems communicating with their hub (which is installed close to the Samsung one).
Since I am really new to SmartThings, I don’t know if I am missing something here.
All sensors are original SmartThings sensors (it seems) and they all have new batteries.
If this is really their true performance, I must say I am really disappointed.