SMLIGHT SLZB-MR4U

… (part of the non posting group because it works). I have the mixed apple + home assistant setup. Works like a charm! Even using the more experimental SLZB-MR4U. Using it with ikea Matter devices only.

Excerpt saved from the Arctic Shift Reddit archive on 2026-10-23.

first - if you´re going to use zigbee and matter over thread mixed , try get dedicated sticks or a combo-stick (like the slzb-mr4u, i use it, works great) so you can use both in parallel. do not use "dual protocol" on just one device, it´s.. not worth the hassle imho. THEN, a lot of ikea switches (!) do not work ootb the way ikea intends them to work. you will need to fiddle with them , some need "blueprints" ,some just work slightly different than noted on the packaging.. the plugs and bulbs all work very well, although i like the old tradfri better than the kajplats in terms of color …

Excerpt saved from the Arctic Shift Reddit archive on 2026-10-23.

I've ditched my SLZB-MR4U as a controller and got a ZBT-2. My Zigbee network went from problematic to rock solid with just that change. OTA updates just roll on through now. Whereas when trying OTA over the SLZB, they failed wayyyy more often than worked. Same network. Only difference was the SLZB/ZBT-2. I have \*some\* Thread buttons (Ikea) and I don't feel compelled to get any more. Zigbee 4.0 with the low non-2.4Ghz band is going to be fantastic.

Excerpt saved from the Arctic Shift Reddit archive on 2026-10-23.