I have my house full with Gira KNX RF (wireless) wall switches (and dimmers).
Any solution I can re-use all these (expensive) wall switches to interact with my Hassio / Zwave infrastructure. Maybe some gateway available to bridge between Gira RF signals and Zwave?
Woukd be curious if anyone else already solved the same issue…
You need a KNX RF line coupler in order to be able to connect your RF devices to a Twisted pair line. something like this KNX RF+ Line Coupler. But to power up the TP line, you need a KNX power supply and a KNX ip router to link everything to home assistant. The issue here it might not only be the hardware but to find the setup of your system (group addresses, device addresses…), unless you are the KNX partner -integrator who did the setup.
The Rf switches and actuators need the rf line coupler only for the initial setup or if you need a way to communicate with wired devices. They can communicate directly to each other.
So you want to get rid of the dimming actuators?
Remali is right, you would need ETS to set things up. And ideally the .knxproj file. Maybe you can even use the demo license to do that in this special case (you would just set up the couplers and use the existing configuration of the switches).
You don’t need a KNX IP router, but an interface. Sounds similar, but costs half. There are even KNX TP power supplies that have an ip interface built in JUNG - KNX Spannungsversorgung KNX-System Technik and you can get used PS for ~30€ and ip interfaces for ~90€.
Another way could be to use a RF to USB stick and dabble with knxd, but I have no idea if this really works.
Thanks farmio & Remali_Ls things are getting more clear to me.
Stil some questions to make sure I am really on the right path
To connect with the RF signals from the Gira Wireless wall switches need a KNX RF+ Line Coupler.
What is the difference between a Line Coupler and a Media Coupler? Or is it the same?
Do I have any freedom with this, what to choose?
What I understand I need to configure the components (ETS), but this needs to be done only once. Am I right this is down by software, or I have to do this with hardware? Can I find some manual somewhere to guide me.
On top of this I need an KNX IP interface and a PS; preferably in the same unit.
Afaik this should be the same. Line couplers are usually used to connect 2 TP lines. Media couplers to connect a RF line and a TP line. I wouldn’t be surprised if some manufacturers name their media couplers RF line couplers.
There are however 2 different Knx RF Standards - an old one and the current so check what your switches use. Gira has great manuals, I’m sure you find lots of information there.
ETS is the software to configure the devices. This is a chapter on its own…
How many switches do you want to use?
Yes. No, not preferably - get the cheapest combination you find. I’d search for used components. But it needs to be a knx (eib) certified PS.
That’s not good. Let’s look at ETS licensing Schema
Demo: 5 Devices
Lite: 20 Devices
Home: 64 devices
The Interfaces and couplers count as a Device too.
You may find that the price for a suiting ETS license (even if you count in discounts) may exceed what it would cost to hire someone to configure it for you once (if Lite is not enough).
There are ways to use Light and maybe even Demo with multiple projects to circumvent that, but I don’t know anything more about this.