On Tue, 13 Oct 2020 17:43:10 +0100, Max Demian wrote:

Couldn't you replace the button with an illuminated one? The kind where
the light goes out when you press the button (because it's wired across
the contact).

Not good for battery life even with a high effciency LED. It also
only indicates that the switch contacts made not that the ding-dong
ding-donged. Especially with an high effciency LED that'll light
quite brightly on only a mA or so.

--
Cheers
Dave.