System Sensor MA/SS-24D Just another duplicate. Brand System SensorModel MA/SS-24DManufacturer System SensorType Alarm (Sounder/Strobe)
Simplex 4903-9417 Category : SimplexThis is a SmartSync TrueAlert which I am able to use with my Simplex 4010.
EST GCWN-VMA Category : EST/EdwardsThis is a ceiling mount strobe which would be used for general signaling purposes.
Radionics D571S Category : OtherI always associate these re-branded Wheelock AS’s with Walmart. I’m sure others out there can also understand.