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)
System Sensor CH24MC Category : System SensorThis alarm just looks like a slightly smaller version of the SpectrAlert Classic speaker/strobe.
System Sensor PA400B+PS24LO Category : System SensorThe horn’s model is PA400B, the strobe’s model is PS24LO.
