Hello Y’all
Recently I stayed at The Ingleside Hotel. It is nice but is also an older building. They updated some of the Notification Appliances and pulls. It looks like the OG system was simplex. I didn’t see any annunciators or panels. All of the Exit signs were AC only, and not up to code unless they had a separate battery for all of them. Also in some hallways they had residential smoke alarms, I don’t know if that was up to code, Strange……
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I can definitely tell that some of those devices replaced older/bigger ones going by the trim plates present. As for the residential smoke detectors outside of the rooms: I don’t know if they’re code-compliant being used in that way or not (probably not considering their normal intended use) but there probably should be commercial ones in their place instead. And yeah, the exit signs I’m sure aren’t up to code either, what with them being AC-only (though they look fairly new, & I believe battery backup has been standard in exit signs for quite a few decades, so why would there be one without it?).
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I have one of those slim line signs pictured above, they don’t have a battery.
Well okay, but even though they’re too thin to have a battery in them that’s still a design flaw I’d say as exit signs need to be able to continue to function even during power outages.
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Do they have a AC indicator light on the exit sign? Those would mean it is charging the battery inside them. It’s also possible to have an external battery circuit just for the exit signs to be poweredby.
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That light might be on signs that don’t have batteries too you know, but yeah: external backup batteries are a thing as well.