So I need a battery powered switch->zigbee sensor unit for my own external switch (a pressure mat in this circumstance) not some built in switch.
This seems like a not uncommon requirement, but I cannot find either any previous posts, or any immediately capable hardware. The only solution I have so far is to pull apart a Sonoff ZNZB-01 and solder connectors across the surface mount mini-switch on that board, wired to the remote switch. But that is pretty fiddly, and likely to go wrong: I don’t have surface mount soldering gear and have a tremor!
Can any more experienced hackers advise any better solutions to this? I expect this is not the only time anyone will want one (but could be wrong).
Oh - and why zigbee? - mainly for compatibility with existing setup and battery low-power requirement.
Thanks all.