I was in the basement of a building a work at, and saw a few of these above the sprinkler main. They are also located throughout the building in various maintenance rooms where sprinkler pipes are exposed. I am guessing they are for the flow switches but I don’t know much more. Anyone have any idea on model/year? (Im thinking 1990’s because of an addition to the building)
Probably Pyrotronics System 3, but these are just general remote alarm lamps, don’t think the panel model matters. They are just wired directly back to the device. Mostly smoke or duct detectors in another location, like above the ceiling or in a shaft. Sometimes you will see them outside of a room, they are connected to the smoke detector inside the room to make it faster to identify which detector is in alarm on the zone. I’ve never seen them connected to a water flow switch but I guess it’s possible. A good tech would slap a label on the lamp with at least the device number (location even better) so you know what they are for.
Looks like System 3 to me. We have a ton of those (and some older ones) in some of the buildings I work in (Smithsonian Institution in DC).
It’s one of these (this is the newer version of it anyways):
http://firealarmresources.com/wp-content/uploads/2013/06/3515.pdf
I’d assume it’s tied to a duct detector or hidden smoke detector somewhere. Are the sprinkler pipes you’re noticing also in mechanical rooms by chance?
Two of them were by the main sprinkler room and the others were next to pipes in the stairwell.
Hrm. I’ve never seen them tied to water flows or tampers before, but I guess it’s possible.
I can get another picture with the whole thing together, I am almost positive its connected to the flow switch.
Ran across these today, it’s an RL-40, made for the System 3 which came out in the late 60’s/early 70’s. These lamps were probably made between then and the mid 90’s.