Does anyone know of a zigbee humidity sensor that is also a zigbee router? I’m looking for devices that do not necessarily have a screen. I’m hoping to find small, inconspicuous, ones to help build zigbee mesh. Distance between all my bathrooms is too far for my zigbee SOnOff USB 3.0 dongle.
I’d be open to other zigbee devices to help build the mesh as long as they are not lightbulbs. If you have a zigbee setup in a large house (5,000 sqft), how are you pulling it off?
To be a Zigbee router, it needs to be mains powered, and I have not yet seen a Zigbee humidity sensor that is mains powered.
I have found those little round $15 zigbee switched plugin outlets to be very effective and… cheap.
What geography are you in. Device availability varies.
If you’re in the US, for my install, I just put at least one GE zigbee smart outlet in each room. You can basically see the mesh from space 
lol, was hoping to avoid adding those. Might there be the equivalent of a Shelly smart relay where I can stuff it behind a wall switch and pull it off? I know sonoff has them for EU but they are only edge devices. I am in the US.
Three years ago I was in the same boat. After buying them in bulk (was a package deal from one of the online retailers, contractor pack of a dozen I think) I couldn’t find anything cheaper that offered double duty (not just a router) was unobtrusive (no wall warts) and had a good signal.
They’re a pain to pair (the button press is… Complicated) but ive never had anything connected to one just fall off. My #1 zigbee problem is my neighbors wifi that insists on changing channels on top of me once every few months…)
The zbmini (not zbmini-L) is a router, but at least in my experience, not a great one, but newer fw if it exists might help.
By far the best router device for me has been a ZBDongle-P flashed with router firmware, if you can find out of the way spots to hide them behind furniture or such.
just as a quick follow up. I might have found a solution with the Sonoff mini. SONOFF ZBMINI Zigbee 3.0 Two Way Smart Switch