Siemens U-EC-MCS Category : Siemens Although this alarms looks like an electromechanical horn/strobe produced by Cerberus Pyrotronics/Siemens/Faraday around the same time, it is actually a chime/strobe. Brand SiemensModel U-EC-MCSManufacturer SiemensType Alarm (Chime/Strobe)
Simplex 4901-9811 Category : SimplexThis particular alarm is actually capable of doing three different tones.
