CP400 power supply ?

Could be an AC panel. Didn't some of the old fire panels used to be AC?

This one is definitely DC but early panels offered filtered and unfiltered AC and some times both. the unfiltered was for door magnet holders which did not need clean DC how ever this output says 24 Dc but not what quality it is.

I'm curious. Do they allow you to connect a "non-fire alarm device" to a listed fire alarm panel in the US? You would never see that here (in Canada).

In old days door magnet power was allowed from the panel it is no longer permitted and just a relay trip is now done in panel. codes have changed drastically since i first started installing panels in late 70's

hooking up non listed equipment is permitted in certain cases such as external dialer etc where panel is providing a closure or open but not directly powering it.

I thought you could if you didn't use that zone as a fire zone (or point).

Like a supervisory for something for instance.

With NFPA 72 you can hook anyhting up to a fire panel as long as the failure of the non-fire device does not compromise the fire life- safety aspects of the system.

As an example Vista-32FB. Listed fore commercial fire use and Burg/ Aux functions.

Jewellfish