Fitted my 3 gang T1, first time I do anything HA so I'm quite excited.
I was lucky, I had a neutral coming down in the switch directly behind the one I wanted to replace so I was able to pull it from there. Electrical wise I found the T1 to be of decent quality, I could tighten the screws nicely without worrying I'd strip or break anything.
My biggest issue is the way the switch mounts to the plastic bracket. You screw in a small bracket and then push the switch and faceplate into place. 4 clips are supposed to keep the face in place. In order for this to work there can be no give behind the bracket, so your bracket must sit snugly against the wall when tightened. If the hole in your wall is not the right size, or perfectly flush - then you are going to have a tough time fitting the switch on. I eventually gave up because it got dark, so will make a plan on Saturday morning.
The switching on/off of the relay gives a nice click which gives you that tactile confirmation/satisfaction when turning the light on/off at the wall switch.
Other than the fitting the only thing that annoyed me a bit was connecting it to my wifi - I have 5.0ghz and 2.4ghz broadcast on the same SSID. All other devices in my house, old and new, handle this setup well and know which band to connect to. I had to switch off my 5.0ghz band, connect the sonoff and then switch on the 5.0ghz again. All seems to be working well so far for the last hour. Google Home setup also working nicely with switching lights on/off.
Pretty happy - just need to get my hands a bit dirty getting it fitted nicely. Standing about 1cm away from the wall at the moment.
Yeah - this is a known issue with Sonoff devices.


