marble sky
I'm curious to know if anyone else has noticed recently with their SLZB-06M device that battery devices connected VIA Zigbee2MQTT show as offline in more recent weeks? I've got my availability timeout set to 60 which doesn't seem to make much of a difference.
The bigger issue that I ran into most recently was one of the door sensors was "Unavailable" when I activated my Alarmo the other night and when it came back online and because the window was open, the alarm went off.
worldly salmon
marble sky
That didn't really explain the battery devices showing as offline
bleak sierra
That didn't really explain the battery devices showing as offline
Yesterday I received an update to my SMLIGHT device. As an important one. I'll try that first
worldly salmon
That didn't really explain the battery devices showing as offline
You have said you are noticing more battery devices showing as offline, but not really given any details of your Zigbee and WiFi infrastructure. You also have not stated anything about your location as if in an apartment you would have more neighbours. As an example, let's say you were sensible and put your WiFi on Channel 1 and your Zigbee on Channel 25 when you first set things up. Everything worked great. Now your neighbours have decided to add WiFi, and they decide to use Channel 11 for their WiFi. Whilst this appears to work for them it is actually degraded due to interference between you Zigbee network on Channel 25 and their Channel 11 WiFi - they don't notice as much but you do because the battery powered devices get hit by the interference.
In other words, whilst you have not made any changes, your neighbours may have.
First step, is check you own Wifi and Zigbee channels to ensure they do not overlap (see image below)
Second step, get a WiFi analyzer (should find an app on the store for your phone) and see what channels would work best. Bear in mind that a lot of new WiFi routers default to selecting the 'best channel' which may mean that your neighbours may start interfering again.
marble sky
There's no WIFI interference... I'm all across that being a network engineer so that's fine. As I mentioned, it's purely battery devices on the Zigbee2MQTT network that keep showing as offline. Someone mentioned changing the availablity setting from 60 mins to 1500mins which I've done and now they battery devices show online HOWEVER!!! I did just turn off a powered Zigbee device and waited 30mins and noticed that it doesn't appear offline in the Zigbee2MQTT page which would indicate that I would have to wait 1500mins for it to appear offline rather then knowing when it actually went offline.
worldly salmon
look at https://www.zigbee2mqtt.io/guide/configuration/device-availability.html#advanced-configuration
You should note that the default is for active (mains powered devices) to have a 10 minute timeout, whilst passive (battery power devices) to have a 25 hour timeout.