On 02/06/2019 11:03, Jim K.. wrote:
Cursitor Doom Wrote in message:
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.



How much should the op spend on a "proper multimeter" to do the
job properly?

For this application a non contact volt stick will work well:

https://www.tlc-direct.co.uk/Products/TMPL107.html

or

https://cpc.farnell.com/c/test-equip...ters-detectors


--
Cheers,

John.

/================================================== ===============\
| Internode Ltd - http://www.internode.co.uk |
|-----------------------------------------------------------------|
| John Rumm - john(at)internode(dot)co(dot)uk |
\================================================= ================/