ᐅ Which smart home system is best for our new build?

Created on: 24 Jul 2022 09:48
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Pacc666
Hello

we are currently building our new house.
We had the first appointment with the electrician, and for the smart home system, he recommended Free@home.

The electrician does not offer KNX.

What would you recommend? Should we go with Free@home or install a wireless smart home system ourselves later?
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xMisterDx
28 Jul 2022 22:15
Pacc666 schrieb:

I probably don’t even have a clue about all the possibilities with KNX, so I really can’t judge whether the extra cost would be worth it for us.

KNX is like a self-driving car. You get in, say “Gothenburg,” and it takes you there. It comes with a price reflecting those features.
Wireless systems are more like cars with driver assistance—you still have to steer and monitor everything yourself in case the system malfunctions or gets confused by unclear situations.

Regarding wireless failures… you’re not running an industrial production line, right? If the TV suddenly switches off or a light turns on or off unintentionally… that’s something you can live with. We’re not talking about a paper mill or a glass factory where you’d lose a day’s production if the system shuts down unexpectedly.

In discussions like this, everyone tends to emphasize the advantages of their preferred solution and the drawbacks of the alternatives. KNX is definitely by far the best system. But just the cost of pulling 45 bus cables to my outlets alone would have been huge… and where would I even fit them in the utility room? I probably don’t have room for such a cabinet in my 6.5m² (70ft²) utility room.

PS:
And don’t fall into the trap of thinking this forum is representative, like “Wireless in new builds is a no-go, nobody does that.” Sure, I know some neighbors building with KNX… but I also know quite a few who constructed new homes without giving smart home technology a second thought. Not even a single outlet is controlled by a wireless smart plug from the hardware store.
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Pacc666
29 Jul 2022 07:44
ok

Just a different question about KNX (maybe this question is irrelevant because of KNX anyway).
KNX relies on presence detectors to control everything.

Is it even practical to implement KNX if you have a large dog weighing 40-50 kg (90-110 lbs) that is allowed everywhere in the house?
Wouldn't the dog trigger the presence detectors all the time?

Does KNX even make sense if you have a large dog, or would it just disrupt the automations and constantly turn lights on and off everywhere?
Tolentino29 Jul 2022 07:46
As far as I know, this can be set, although I haven't seen it in practice yet, especially whether the child is then still detected or ends up just wandering around in the dark.
Araknis29 Jul 2022 07:53
xMisterDx schrieb:

I don’t even want to imagine how much just the 45 bus cables to my sockets would have cost...

You clearly don’t understand KNX. You don’t run a bus cable to sockets.
Pacc666 schrieb:

Is it even practical to implement KNX if you have a large dog weighing 40-50 kg (90-110 lbs) that is allowed everywhere in the house?
Wouldn’t the presence detectors be triggered all the time by the dog?

Does KNX even make sense if you have a big dog, or would it just mess up the automations by constantly turning lights on and off everywhere?

No, that will always trigger the detectors. You can mitigate this somewhat with very sensitively adjusted sensors positioned at switch height. But this has nothing to do with KNX; it happens with any sensor, regardless of the system.
Tolentino schrieb:

As far as I know, you can configure it, although I haven’t seen it in practice, especially whether a child would be detected or would still be moving around in the dark.

It doesn’t work reliably with standard ceiling presence detectors.
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RotorMotor
29 Jul 2022 08:26
Does the dog always have to live in the dark, or is it allowed to have some light on?
Tolentino29 Jul 2022 08:30
Well, if the dog is drinking from the bowl at night, the hallway light doesn’t necessarily have to turn on. But you could set it to operate on a timer. Dogs have enhanced night vision and usually don’t need any lighting.