System Sensor SP1W2475ADA - FireAlarms.tv - jjinc24/U8oL0's Fire Alarm Collection

Category : Simplex

Since this is a ceiling-mount unit, it’s model number is probably different from 4903-9101, but I couldn’t figure out what...

Category : Pyrotronics

I have two of these alarms just because they’re so rare.

Category : Notifier

This is the oldest Notifier pull that I own which opens with the modern Notifier key.