Correct product selection, siting &
Installation are key in obtaining the
most from your hard wired CO alarms

There are 2 manuals in all Kidde Fyrnetics hard wired alarms.
These are for Models 423D/9hir & 423/9hir.
Installer's is for the guidance of the professional Installer in
selecting the best sort having regard to the environment.

Important siting recommendations are also given here that should be considered at project outset., based on BSEN 50292

Owner's is for the householder and provides guidance on
the dangers of carbon monoxide, and how the alarm will
notify you through sound & LED displays.

And for householders who've mislaid that provided when
new, this is a fast & efficient way to get another, free of charge.