homeassistant

That's weird to me. I have 30 aqara devices and they only drop off the network when the controller is missing (ConBee stick).

interesting. theirs are pretty much the only reliable sensors I found

If you happen to use a Conbee II: I had this issue until I updated the firmware. Has been rock solid with aqara devices after that.

My first zigbee device was Sylvania (73685) rgbw led strip. On it's own it worked fine but once I started trying to add sengled zigbee bulbs I kept having problems with pairing the bulbs or keeping them connected. Zigbee uses 2.4ghz so I thought maybe interference so lowered power output on wifi AP 2.4ghz band & even turned it off for testing but didn't help. I think I read somewhere that sylvanias caused that problem. I unplugged sylvania led strip, reset & rejoined everything else and had zero problems. Tried to add the sylvania back in and disconnect problems came back after awhile. It was past the return period so now I keep it unjoined and plugged into a zigbee smart outlet. I sometimes have to remove power from it to join new devices or when I restart zigbee controller. Currently have mix of sengled bulbs, thirdreality plugs, sonoff plugs & sensors, and single aqara tvoc all working together fairly reliably.

may wanna check your wifi & zigbee network collisions, your network map or make sure you don't something like a 2nd hub or something like that

Fortunately my thermometers don’t do that, because they are a good choice, Zigbee wise. Always on the lookout for replacements, if the need arises…

Aqara devices can be finicky with non-Aqara devices, especially router devices.

I've personally also had much better results with Aqara devices since switching to Zigbee2MQTT and a Sonoff Zigbee stick, I had a lot more dropouts with ZHA and a Conbee II stick.