Mains powered microcontroller / switch input

[dire shuttle]

Heya,
i was wondering if there is a nice product for my application out there.
Mains powered Zigbee /Matter device or microcontroller that can fit in a ~60mm flush mount box to replace a power switch. I would like to create my own switch panel.

I'd love to hear suggestions, otherwise i might have to design my own^^

[noble mural]

could use a shelly relay, you could wire it to any switch/button you like.
the gen 4 range supports wifi/zigbee/matter-over-wifi so can pick what you want.

[dire shuttle]

i want more buttons per panel tho

[noble mural]

what is your actual plan here? just add some more buttons?
does it need a relay?
any display?
does it have to physical buttons or would a screen with a dashboard be an option?

some general idea of what of what your actual end goal would probably be useful.

[dire shuttle]

Good point. I have relays on devices that I wanna control from a centralized position. At that position I don't need a relay (and my 60mm deep boxes are surprisingly tight to fit stuff into, my current lightswitches aren't very low profile.

It's not always the same amount of switches, in some places I want a small display for metrics... So I'm looking for a diy friendly solution, aka for example just a 230V esp32 that I can run esphome on and do whatever

[noble mural]

I tend to use these - https://www.aliexpress.com/item/1005008613905121.html
for projects where I want to run an esp32 from mains.
for just buttons then going for battery powered ble/zigbee button panels then attaching them to the front of the current switch. theres a bunch of 3d print designs for mounting stuff over light switches. and the battery is something like that depending on usage lasts 2 years or something. saves messing with converting mains. then you just map the buttons in home assistant.

if you want a screen then there are some stuff designed for it (e.g. nspanel/shelly wall display) or you could mount a tablet or other screen setup.

if you want more specific ESP stuff you could also try asking over on the ESPHome Discord Server - https://discord.gg/JsyZmvZm

[dire shuttle]

I'll have a look, thanks!
And yeah, I came across the small PSUs, but then my device is a little... Exposed. Honestly not 100% sure what I'd be happy with in a permanent install, I'll have to have more of a think!

Thank you for the help so far tho!