I've read that fire alarm systems need to be replaced on ten year
intervals. I was wondering if all components need to be replaced in
my wireless system. The system includes smoke detection as well
sending alarm to local fire dept.
Included are smoke detector/transmitter, keyboard, and panel. The
system is 12 years old. My initial thought was to replace all the
detector transmitters now. Over the past year two of the detector/
transmitters (I have 4) have malfunctioned. Should I replace the
other components?

"Frank" wrote in message
I've read that fire alarm systems need to be replaced on ten year
intervals. I was wondering if all components need to be replaced in
my wireless system. The system includes smoke detection as well
sending alarm to local fire dept.
Included are smoke detector/transmitter, keyboard, and panel. The
system is 12 years old. My initial thought was to replace all the
detector transmitters now. Over the past year two of the detector/
transmitters (I have 4) have malfunctioned. Should I replace the
other components?

Just the smoke detectors. All the rest will work forever like a stereo
or other electronic gizmo. But the smoke detectors are open to the
air, so are subject to build-up of whatever is in the air.