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 Smart Home, Let's discuss

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zellleonhart
post Sep 23 2025, 02:08 PM

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QUOTE(C_ST @ Sep 22 2025, 10:05 AM)
Sorry if is repeated question, tried scrolling this thread + search function, can't find any related answer.

N years ago, my eletrictian asked me to get a no-neutral smart switch, so, bought a no-neutral wifi + rf433mhz 3 gang switch, installed with a capacitor on my first lamp, follow by another lamp and ac fan.

Recently the switch start to be not responding, probably due to wear & tear, thus, finding back a similar smart switch. I prefer the kind with 'press' function, not the touch screen type.

But nowadays, the 'press' type in the market thats come with Wifi + Rf433mhz are all 'Need Neutral', can't find any is no neutral.

So my humble noobie question
1. If there is a fan, does it means it actually have a neutral wire inside?
2. Or, if I die die install a Neutral require switch, what scenario will happen?
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I might not answer your question directly but this was my concern for my house, it's too big of a single-point-of-failure to rely on a cheapo smart switch and to crack my head around the wiring.

Hence I move the 'smart' part to the end devices instead of the switch. In my bedroom I installed 6 Wiz smart downlights, if 1 of them kaput I can still turn on the rest while replacing the faulty one. With 6 individual lights I can also group them for zoning etc. Most of the time I only turn on 2 out of 6.

For ceiling fan, most modern ceiling fans use 433MHz RF so I can just adjust on/off/speed using a broadlink RF smart remote (I use the RM4 pro). Same goes to my AC remote (IR instead of RF).

It's a bit more tedious to configure all at first but to me it's worth it. Even better if you setup home assistant, centralizing all the controls across different brands/protocols.
zellleonhart
post Sep 25 2025, 10:53 AM

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QUOTE(angelgemini @ Sep 24 2025, 11:17 PM)
Do you know if Rezo fan also using 433MHz?

i notice each of the fan pair to individual control, can't cross use even same model
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I don't know for sure because I only use Alpha fans, and yeah each unit has different RF codes even though the models are the same.

But most likely they all use 433MHz. On alpha fan remote it mentions specifically 433.9 MHz.

 

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