System Sensor P2475 This is a SpectrAlert classic with a fixed candelas settings of 75. Brand System SensorModel P2475Manufacturer System SensorType Alarm (Horn/Strobe)
System Sensor MA-12/24L Category : System SensorIf I remember correctly, this sounder can be used for purposes other than fire protection.
Wheelock MT-12/24 Category : WheelockThis signal, I believe, can be used for general application purposes, as well as fire protection.
Potter SH-1224 Category : PotterThe appearance of this alarm is like a mix between a System Sensor SpectrAlert Advance and a Gentex Commander 3....