How many devices possible to pair?

Hey guys, home assistent with zigbee2mqtt looks very good. I’m using the Conbee 2 usb stick and my question is, how many devices are supported? Dresden-Elektronik said 200 devices. Is that true, even if I don’t use the phoscon/deconz integation in hassio? Thanks

There is no relevant limit, as Zigbee devices on mains usually act as routers, too. The numbers are only relevant for devices paired directly to the coordinator device.

Are you sure there’s no total device limit? Dresden Elektroniks said something about 200 devices total (mains and/or battery). I remember someone posting here with 400+ (mostly mains powered) devices having issues with a single ZigBee stick.

Do you actually have 200+ devices or is this just a theoretical question? Even if I’d replace every bulb with a smart bulb and every outlet with a smart plug and put 5 sensors in each room I wouldn’t even come close to 200 devices. If you are at this point there’s still the option to have two or more separate mesh networks with a coordinator for each network.

As of deCONZ v.2.12.4, support was increased to 512 devices. More here: Maximum Supported Devices: 500 now (vs 200 previously)? - General Support - deCONZ Community

chipping in sorry if its outdated, do HA has maximum of zigbee devices integrations before it slowed down etc? for example if we are using pi to pwer it up?

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uhuh , i noticed it keeps ALL config and all automations in one big flatfile per type (on a linux journaling filesystem) so im a bit worried that doesnt help somehow as a journaling fs like EXT is specifically made to serve zounds of small files in short order … i dont know how things work under the hood but i bet its not by track/sector on the disk for fast access either … that apart i had the same question just now … so “if its a mesh network”

this post on linkedIN would state a max number of 65535, which i think for most houses, even people living in disneyland would suffice . I dont know enough about it to speak with confidence however and i feel HA is pretty much babyfood atm and years away from “pro”-level, let alone “military grade” application , i certainly wouldnt trust it with the lock on my front door in its current state, but its great stuff nonetheless, for people who loved doing linux in the 1990s (lol , we all gotta start somewhere) theres a ton of remarks and questions, like why is “the core written in python” (what does that even mean ??) and not in a fast-compiled type of low level language etc. etc. but so far i make do, i got about 23 zigbee devices and after two months what i notice is that the battery life on these things isnt really eco-friendly lol, most are still at 100% tho but i got a remotre that was like down to 36 after a few weeks and its not rechargeable so i got a lot of digging to do … and the devs got a lot of coding to do … assuming they dont just try to sell subs for the cloud by turning the free version into nagware (huh h uh …)


I track the battery changes on my devices, and all 29 of them have had either 1 or 0 battery changes since I started tracking them about two years ago. It’s more than likely your device, not the code.

@Catham_Joker Batteries will drain faster than normal on Zigbee End Devices (i.e. battery-powered devices) if you either have problems with EMF/RMI/EMI interference or you do not have enough “Zigbee Router” devices (i.e. mains-powered devices that act as Zigbee repeaters/extenders), both causes reception issues so communication messages need to be resent which drains the battery quicker than usual. Read and follow all these tips to resolve it + replace batteries once more when done so to be sure have fixed the root cause: