Simplex 4903-9236 Category : Simplex This unit has an electronic horn, as opposed to the electromechanical horn or speaker found in other rectangular Simplex notification appliances. Brand SimplexModel 4903-9236Manufacturer SimplexType Alarm (Horn/Strobe, 4-wire)
Edwards V1251-0011-001 Category : EST/EdwardsThis is a coded pull station, and really is just a bigger version of the Edwards 270-SPO.
System Sensor MAEH24M Category : System SensorThis multi-alert sounder/strobe has slightly more “mechanical” tones than the System Sensor MASS24LO.
