Do all FSD’s have a smoke duct detector associated with them? Thank you.
Do you mean Dampers for like vents in hallways? If so, those are non electrical, they use fusible links to hold a screen or flaps, which close when the links melt.
No, motorized fsd’s.
No, not all
Motorized can be tied to either a specific smoke detector (using conventional relays or addressable mapping depending on the system) or can activate on a general fire alarm event.
Sometimes too, they are tied to relay basis on 120VAC local smoke detectors, rather than as part of the Fire Alarm system.
Thanks all. Much appreciated.