ᐅ Looking for: electronically controlled double-pole / two-way switch

RotorMotor schrieb:

Since the fear of “smart” seems so big, I would recommend a traditional installation.

Maybe I have found my combination: pulse relay switches (ELTAKOS). This proven technology has been reliable for years (?), and I can add additional virtual (i.e., microcontroller-controlled) switches at any later stage. Some Eltakos also report their current status back, allowing for real-time monitoring. Each room gets its own Eltako, and an Ethernet cable is pre-installed in the junction box as a precaution. Later, a “smart” switch can be added there.

Alternatively, the Eltakos could be mounted on the DIN rail. However, this would require running individual wiring for every single room lighting and light switch all the way to the distribution board.

Does this reasoning make sense?
Is it practical?
Has anyone done this?

If you route everything into the cabinet, you'll be prepared for almost anything that might come up later. The price of copper is rising again after a significant drop. I would calculate how much extra cost that actually means. Overall, I think the idea is good and I would do it that way myself. However, it’s just not economical enough for me.

Please do not put the Eltakos in the junction box. That’s really outdated. You won’t save anything anyway if you’re also installing Ethernet cables.

Wouldn’t it be more practical to install a few motion sensors in high-traffic areas like the hallway?

More useful than what? Motion detectors are probably quite useful, maybe even in additional rooms. Or perhaps in all of them.

I would also recommend using Shelly devices here. Yes, if the electronics of a Shelly fail, the light will stop working. The same happens if the electronics of your impulse relay switch fail. However, you can replace the Shelly devices yourself, and mine have been running reliably for years. Local control using a push button or switch still works if you experience Wi-Fi connection issues. Remote control via app (cloud) or Home Assistant will no longer work in that case.

As a simple solution, I would choose Shelly. If you want a more professional setup, go for KNX with star wiring and the corresponding costs.