Good day, I’m sure some may already know about rf sensors, but want to share my experience. I initially used zwave and still have a couple around. These were close to 50GBP a piece! From the start it was always problematic; adding them to network, removing them, heal, etc, etc, etc and I know from the various threads that this is just the way it is with this protocol.
Looking for alternatives I stumbled onto this gateway project.
For the ones that aren’t keen on welding and building modules, the easiest implementation is to buy a Sonoff RF bridge USD14 for the gateway https://www.itead.cc/smart-home/sonoff-rf-bridge-433.html
and flash it. Dr Zz has a video on it.
With this gateway you can manage door sensors, pirs, smoke alarms, flood alarms, etc. Decent door or pirs will cost 6 to 8 usd each.
The thing is, it just works! once set up no more hassle or config errors or any of these recurring stories. So for the price of one zwave sensor (50GBP) you can set up (in my case) 2 gateways to ensue coverage, and still have almost 40usd to buy at least 6 sensors.
For those familiar with tasmotta, you can also use the tasmota sketch to control the gateway in the same manner.
If anyone is interested and I may offer more details, feel free to ask.