On Sun, 6 Feb 2005 23:20:30 +0000 (UTC), Frank Erskine
strung together this:

Sheltered homes for the elderly frequently have emergency "pull-cord"
alarm switches. I don't know whether these are "momentary" action or
"latching", but they are silent. I should imagine any wholesaler or
proper retail outlet would be able to source these "no problem".

They are 12V momentary usually, most definitely are if the ones you
have seen are silent.
--

SJW
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