Matter and KNX in 2026: Why I Still Wire the Backbone First

Every few months a client sends me the same message. They have read that Matter is the one standard that finally makes smart homes simple, that it works across Apple, Google, Amazon and Samsung, and that it might mean they never need an integrator again. Then they ask the honest question underneath it: do I still need KNX?

My answer has not changed, but the reasons have gotten sharper this year. Matter has grown up a lot. It is genuinely useful now, and I fit it into projects on purpose. What it has not done is replace the wired backbone. If anything, watching Matter mature has made me more confident about where KNX belongs and where it does not.

Here is how I actually think about it in 2026.

What Matter got right

Matter is an open standard for the consumer smart home layer. The point of it is interoperability. A Matter-certified light, lock or sensor is supposed to work the same whether you run Apple Home, Google Home, Alexa or SmartThings, and you get to pick the ecosystem instead of being locked to one brand's app. Apple, Google, Amazon and Samsung are all behind it, which is why it stopped being a promise and started being something I can specify.

The device count is the real story. If you want a KNX-native version of some gadget, you often wait, and sometimes it never comes. On the Matter side there are already hundreds of certified products, from Philips Hue to door locks to plug-in sensors. That breadth is exactly why I stopped treating Matter as a threat and started treating it as a supply line.

So the interesting question was never KNX versus Matter. It was how to get the two talking, so the reliable wired core and the fast-moving consumer layer behave like one system.

The bridges are ready

This is what changed. The gateways that join KNX and Matter are no longer science projects. Three that I trust:

Hager put a Matter Bridge straight into the latest Domovea server, out since April 2025. It hands up to 128 KNX devices to Alexa, Apple Home, Home Assistant or SmartThings, covering lighting on and off plus dimming, switchable sockets, blinds and shutters, thermostats and sensors like temperature and humidity. Since Hager is already in my standard kit, this one is easy for me to stand behind.

1Home is the workhorse I reach for most, because it goes both directions. Their KNX Pro server bridges KNX out to the Matter ecosystems and also pulls Matter devices back in, so a Philips Hue scene or a Matter door lock can trigger a KNX scene and vice versa. It runs fully local, which matters to me more than almost anything else. List price is around 1,149 euro plus VAT on their European store, so treat that as a starting point before shipping and local taxes, not a landed Joburg figure. If you only need the Matter-into-KNX direction, their smaller IoT Gateway does that for about 519 euro plus VAT and lets you assign group addresses to Matter devices right inside ETS.

There is also the Swiss-made Atios KNX Bridge, which rolls a KNX IP gateway, a Matter bridge and a DALI gateway into one unit and scales to around 200 devices. Useful on jobs where DALI lighting is already in the mix.

The takeaway is simple. You do not have to choose. You run KNX as the backbone and bolt the Matter world onto it through one of these.

Why the backbone still has to be KNX

Now the opinionated part, and the reason I have not changed my mind.

Matter is still missing the thing that makes KNX a professional system: a proper commissioning standard. With KNX I plan the whole installation in ETS, document every group address, and hand over a system the next person can read and maintain years later. Matter has no equivalent. It was designed for a homeowner pairing devices to an app, not for an integrator building something that has to be serviceable in a decade. Setting Matter up cleanly in a bare building shell, before there is Wi-Fi or a Thread border router on site, is still awkward.

Then there is reliability, and in South Africa that word means something specific. KNX runs on its own twisted-pair bus. It does not care about your Wi-Fi, and it does not fall over because a firmware update went sideways. A lot of Matter still leans on Wi-Fi or on Thread, and Thread needs a border router that has to be powered and online.

Think about what that means during load shedding. If your lighting logic lives in Matter over Wi-Fi, then your router, your mesh nodes and your Thread border router all have to be on backup power for the "smart" part of the house to keep working. Miss one of them on the inverter and the automation quietly dies while the lights are technically still on. With KNX, the bus keeps doing its job as long as the actuators have power, which is exactly the kind of boring dependability I want running a client's home when the grid is misbehaving.

New Matter hardware for professionals is arriving too. Wago's flush-mount actuators, in Wi-Fi and Thread versions, started shipping in May 2026 with a matching dimmer following a little later in the year. Good to see. It still sits on the consumer-protocol side of the line, not the backbone.

How I build it

For anything permanent and load-bearing, the lighting, blinds, heating and the logic that has to work every day, I wire KNX. For the consumer layer, the Hue bulbs, the smart lock a client already bought, the odd sensor that only exists as a Matter product, I bring it in through a bridge and let it play in the same automations.

The client gets the flexibility and the big device catalogue they read about, sitting on top of a wired core that will still be running long after this year's app has been rebranded twice. Open standards on both layers. No single vendor holding the keys. That has been my position since the start, and Matter growing up has only reinforced it.

If you are planning a build or a serious retrofit and you want the honest version of where each protocol earns its place in your specific home, that is the conversation I like having. No pressure and no upsell, just a look at what the project actually needs.

Wayne, KNX Logic. wayne@knxlogic.co.za | 082 564 3982 | www.knxlogic.co.za