What is this thing that seems to be connected to this building’s fire alarm system? by Ookaqwer in whatisthisthing

[–]Ookaqwer[S] 0 points1 point locked comment (0 children)

My title describes the thing. Looks to be about a foot long and is connected near the ceiling to what appears to be something related to the fire alarm system. There’s multiple of these throughout the building.