System Sensor PA400B+PS24LO Category : System SensorThe horn’s model is PA400B, the strobe’s model is PS24LO.
Simplex 4903-9101 Category : SimplexSince this is a ceiling-mount unit, it’s model number is probably different from 4903-9101, but I couldn’t figure out what...
Wheelock MB-G10-24-R Category : WheelockI’m missing this unit’s label, so that model number is only a guess. It’s probably right though.