I have been in contact with BRK electronics
(First Alert) re: a smoke alarm with a
Normally Closed contact to that can be
connected to an X10 Door/Window Sensor. BRK
sells smoke alarms in the UK that can be
interconnected using an alarm wire. They
are currently checking to see if that
connection will trigger a door/window
sensor. If this works, the all lights on
signal will be transmitted through the X10
alarm panel. I anticipate a response by
8/13/04 and will advise.