Matched in attachment:
"... maintain all systems,
devices, and equipment to detect a fire, smoke, or carbon monoxide, actuate an alarm ... accordance with the International Fire Code, including, but not limited to, as follows:
1) Smoke alarms ... It is an affirmative defense to this subsection
that battery backup is not required for smoke alarms ... It is an affirmative defense to this subsection that smoke alarms
are permitted to be solely battery ... operated if the alarm was legally installed prior
to February 1, 1979. ..."