Spot lighting / arrangement / quantity

About 14 months ago, I bought some for 17 euros at the "largest river". Since these sockets with two USB ports are not immediately visible, they didn't have to match the series exactly.

So I can also easily remove the "normal" socket afterwards and look for a USB socket myself and install it afterwards? It's no rocket science and if the general contractor charges a lot for a USB socket, quite reasonable.

Presence detectors really register the presence of people, because for many models the movement of the respiratory system and shoulders is already sufficient to detect this.

Motion detectors, on the other hand, are sensors that require larger and stronger movements to be triggered.

Okay. The presence detector is probably significantly more expensive then? Has anyone already installed one here and can say something about the costs as well as the installation, etc.?

So I can also easily remove the "normal" socket afterwards and look for a USB socket myself and install it afterwards? ...

At least in our case, "normal" sockets were replaced by the mentioned sockets without any changes to the wiring.

Of course, you can buy a socket somewhere and install it yourself later. But I don't believe that the electricians of the [GU] would install any "noname" switch material. If they do, then I would be concerned. The USB sockets from Gira, Jung, Busch&Jäger and Co. simply cost a bit more. The work remains the same.

@exto1791 I can’t imagine just 10 euros for a USB socket.

Sure, the food discounters have such sockets on offer every few months. In my observation, online shopping for DIY store items is often considerably more expensive. Especially the one named after a big river. Anyway, replacing the socket with such a USB socket is very easy and very hassle-free. You just have to be able to live with the limitations in terms of appearance, etc. If the socket has a single frame, then you can use the new frame that comes directly with the USB sockets. Otherwise, you have to make sure that at least the basic shape fits into the frame range. A square USB socket does not fit into a rounded frame (e.g. BJ reflex SI). But even "square" into "square" doesn’t fit perfectly, because for example the balance SI series flattens at the top and then the corners of the USB socket protrude. It’s not perfect, but personally it didn’t bother me.

Okay. The presence detector is probably significantly more expensive because of that, right?

Yes, definitely, because presence detectors are simply more functional and precise. They are usually also more durable and often more appealing in terms of design.

Has anyone installed this already and can say something about the costs, as well as the installation etc.?

Of course, the technology is not new at all and has been available long before the emergence of typical smart homes and has been used for decades in single-family homes. For example, I have 5 of them installed in my house. The price starts at 60-80 each detector (detector only). The most modern variants can easily cost 300+ though. They usually not only detect pure presence but also many other values like CO2 or humidity, etc., so they can be 5/6/7 sensors in one.

The USB sockets from Gira, Jung, Busch&Jäger and co. just cost a bit more. The work remains the same.

The price often does not only depend on the brand and the fit into your own switch programs but also on what is inside. There are quite a few unboxing videos of such devices tested thoroughly by electricians, and often the no-name products rarely perform well.

That's how it looks. The quality usually leaves much to be desired.