Simplex 4903-9418 Category : Simplex The lack of TrueAlert branding on the front of the alarm, as well as the odd grille, are signs that this is an early version of the TrueAlert. Brand SimplexModel 4903-9481Manufacturer SimplexType Alarm (Speaker/Strobe, 4-Wire)
Fire-Lite RZA-4XF Category : Fire-LiteThis annunciator could go with my Ansul Autopulse 442R. The panel can’t actually be controlled from it, however. The switch...
Simplex 4903-9219H Category : SimplexThis alarm is specially made for high-humidity situations such as swimming pools. That’s what the “H” in the model number...
System Sensor MASS24LO Category : System SensorThis alarm is capable of doing multiple tones. The MASS241575ADA is the updated version of this.
