Anyone seen a double pole door bell button. Friend wants to change his
existing front door bell button to add a zone to his alarm system, so as
when the door bell is rung, he can program a sounder in his outhouse to
activate.

Preferably needs to be two totally separate contacts, one be normally open
and other normally closed. I've looked on RS and can see some nice buttons
for the job, but no point reinventing the wheel if there is a proper button
out there already.

Thanks


SantaUK