Goodbye Bilresa
I tried. I really, really tried.
No network configuration problems. No competing thread networks. Avoided overlapping WiFi channels with the neighbours. 2.4Ghz WiFi is mostly unused in the house. All automations are local - no cloud. All automations on the Aqara M3, no 3rd party eco-systems anywhere in the house. I don't know if ZigBee channel numbers are the same as thread channels, but they are spaced apart. More mains powered thread devices than there are Bilresa switches. Switches have direct line of sight to nearest relay. Kajplats bulbs respond instantly to automations or taps on the phone app. IKEA beta firmware, then latest firmware. Complicated automation to avoid having to even *use* the switches. Tried Home Assistant.
Switches will lag for maybe 10 seconds sometimes. Not *every time*, but often. Several times a day. Maddening.
I have this Aqara M3 (I have their automated roller blinds) so tried an Aqara H1 wireless ZigBee double rocker switch. Even at discount it cost over 5x the price of a single Bilresa - more if you chose the multicolour 3 pack.
Works instantly. Click. Lights on. Click. Lights off. Click. Click. Click. It's pure bliss. Honestly. You can even screw it to the wall and the holes line up with existing UK or type 86 wall boxes.
I gritted my teeth and ordered another 2. I will get more when funds allow.