The Three Bears of Alarms

Photo: TACD
It’s the three bears of alarms: the sprinkler bell, the smoke bell, and the ever-mysterious "trouble" bell! Hm …. I wonder what that one would be for!

Photo: TACD
It’s the three bears of alarms: the sprinkler bell, the smoke bell, and the ever-mysterious "trouble" bell! Hm …. I wonder what that one would be for!
The “trouble” alarm is for when there is a problem with the fire alarm system like a dead back-up battery or a defective detector.
I need one of them trouble bells for when Neatorama commenters get ornery …

