@Black-Cat Wow, thank you for all the information, that really sounds almost impossible.
I will definitely try to get some information regarding IEC 60669.

So if I got you right there will be one test report in the end which will cover all the different tests required by the different certifying authorities.
There are two things I still not understand.

• Is it possible to certify a device so that it can be extended (through a defined interface) by self made hardware without loosing the certification?

• What do you mean with the part about doing it myself? I think just not telling anybody would be difficult, as the assurance would like to know what caused the fire and therefore would do some research to find out. Or are you talking about the case when it is a Level 2 device and I only connect it myself?

I hope you understand what I mean. It's difficult for me to write down this part.

@Black-Cat Thank you for your input, I really appreciate it. Sounds like you have some experience with the whole topic of certification. Apart from being time consuming and expensive, do you think it would be possible to certify a device that allows to switch LV (Low Vortages?) by exposing an ELV (extra Low Vortage?) Interface?
Or does any Device interfering with the LV device have to be certified also?

@Brian-Morris i Think wat i am really looking for is a tinkering-friendly Device that can deliver some low voltage power as well as a possibility to switch higher voltage devices.

The point is that - as far as I know - tinkering with low voltage is uncritical (with respect to assurances and power providers) but everything related to mains power needs to be certified and/or should only be installed by people qualified to do so. So what I would like to see is a device that can be controlled easily and at the same time is safe to use.

@Brian-Morris Great project, looks good. But I think also not what I am looking for.

@gohan said in AC Power and/or Relay interface:

maybe you can start a kickstarter campaign

I did not thought about that, but that sounds like a good idea :simple_smile:. Maybe it's worth thinking about it.

@gohan Well, for most companies you are probably right. But have a look at ITEAD with their Sonoff products... They are already quite open and also seem not to do a lot against people tinkering with it. They sell good products which are adoptable if needed/wanted. And people obviously like it and large communities originate from that which create even better products.
So I think there is a market for those products.

That's what I mean, I'd like to see products where I don't have to void the warranty because I don't need to open it.

I imagine something like the following:

I think that would be awesome.

@Black-Cat said in AC Power and/or Relay interface:

If the OP can do without an enclosed PS

I can do, but I am specifically looking for something that simplifies (in a sense of "assurance-safety") the whole High Voltage side. The products posted by you are really nice, but unfortunately do not address my request.

Like I said before, I am aware, that the product I am searching for might not yet exist. (wondering why ) But maybe somebody has seen something like that.

@Black-Cat I'm a little bit confused. This does not address my issue, does it?

@Black-Cat Ideally 5V or 3.3V. But in the end it doesn't matter too much, as converting it down wouldn't be too difficult. Do you know something?

@rozpruwacz said in AC Power and/or Relay interface:

@exilit said in AC Power and/or Relay interface:

Recom RAC03

oh, You are talking about this ?
https://www.digikey.com/product-detail/en/recom-power/RAC03-05SCR-277/945-1702-ND/3844914

if so then yes this is exactly what I mean and actualy this item looks very good about the price I believe that maybe you could find something half the price but not less ...

Yes, that is what I was talking about. Half the price sounds good.
But to be honest, I think the one you posted suits it better. The Recom power supply's use cases seem to be the same as the HLK module.