FCI STW/4F Category : FCI I purchased this strobe in order to compensate for the broken one on my FCI HEF/STW. Brand FCIModel STW/4FManufacturer Cerberus PyrotronicsType Alarm (Strobe)
Siemens U-MHST-MCS Category : SiemensI believe that this alarm has the ability to produce multiple tones.
