Max Demian wrote:

On 02/06/2019 10:47, Cursitor Doom wrote:
On Sun, 02 Jun 2019 09:05:10 +0100, Adrian Caspersz wrote:

On 02/06/2019 09:02, ss wrote:
On 02/06/2019 08:54, Adrian Caspersz wrote:

I assume using my cheap multimeter I could do the same and check for
voltage?

Yes. Look for changes when you 'modulate' the light switch.

Yes, but not with a "cheap multimeter" - those ones typically pay zero
attention to proper mains isolation despite their self-declared CAT
ratings and have no MOVs etc.

You don't touch any metal parts of a "cheap multimeter" as they are all
plastic apart from the metal parts of the probes.

You may be able to touch metal parts when the case melts though.

--

Roger Hayter