Siemens U-MHST-MCS I believe that this alarm has the ability to produce multiple tones. Brand SiemensModel U-MHST-MCSManufacturer SiemensType Alarm (Horn/Strobe)
Wheelock LS3M-24 Category : WheelockThis is an interesting Wheelock strobe. I’m not sure what type of application this was designed for.