Siemens U-MHU-MCS Category : Siemens I believe that this alarm is capable of doing multiple tones. Brand SiemensModel U-MHU-MCSManufacturer SiemensType Alarm (Horn/Strobe)
Honeywell S464A Category : HoneywellI managed to get my hands on a rare dual-action cover for the S464A series of pulls.
Gentex GX90S-4-15/75WR Category : GentexI also have the version of this alarm that is rebranded by Simplex.
