Hello people,New to HA and Zigbee network via ZHA. I have zbt-2 as co ordinator and 3 plugs sonoff ZBTBF s60 as routers for a building of 3 floors(1st floor=7 rooms in a row-2nd floor=5 rooms in a row and 3nd floor house with 5 rooms).The zbt-2 is put in the roof of 1 st floor in the center, one plug in veranta in 1 st floor one plug in 2nd floor in the center and one in the house.
Are the plugs enough or i need more?i am thinking of puting a zigbee wall switch in every room.
All these will transmit the 40 sensors of doors and windows.
Nobody can answer that, you need to trial and error. It’s a great place to start though. I have 46 ZigBee devices myself and added some Sonoff smart plugs on appliances to give me good coverage. I use Zigbee2Mqtt which has better support and also has a network map if you need to troubleshoot connection issues
But we can… It’s a matth problem
Zigbee spec says 100’’ (~30m)but walls people doors pets etc are things that absorb rf. Realistically I cut max effective /3 and end up using 30’/10m as my max effective node dist.
Then there’s a max parent count where you’ll need 1 parent for about every 4-5 child nodes
So with 40?? You’re looking at at LEAST 10 powered parent nodes to start with. Just to support the node count. Then placement - I’d start from where you plan the coordinator and start in concsntric rings from center at 10/20/30m and start covering a map. In my home this meant at least one wall outlet per room.
I would suggest that all your questions will be addressed in reading available in this section of the cookbook: The Home Assistant Cookbook - Index
A very rough rule of thumb is count the number of light fixtures in your house **.
If you have that many routers you should have a strong mesh network, because lights are usually placed at a distance apart, inside the range of Zigbee connections.
It’s also why smart bulbs make a great backbone for a Zigbee network.
** - If you have a cluster of 2 or 3 lights, then count that as just 1.