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)
National Time SG-C3HSZ Category : National TimeThis is the equivalent of a Gentex Commander 3 horn/strobe.
Space Age A32-BL-SFXC-TJ24B-0000 Category : Space Age ElectronicsThis alarm came with a Wheelock EH-EL1 mounted onto it.
