System Sensor PC241575W This is a white, ceiling mount SpectrAlert classic. Brand System SensorModel PC241575WManufacturer System SensorType Alarm (Horn/Strobe)
Siemens SE-MC-W Category : SiemensA Speaker/Strobe, manufactured by Wheelock and rebranded by Siemens.
Gentex GEC24-15/75PWW Category : GentexThis Commander 2 could be used for a purpose other than fire protection due to its missing “Fire” labels.