Simplex 2098-9201 Category : Simplex This is a “TrueAlarm” series detector. It is tested with a magnet. Brand SimplexModel 2098-9201Manufacturer SimplexType Smoke Detector (Photoelectric, 4-wire)
System Sensor P2475 Category : System SensorThis is a SpectrAlert classic with a fixed candelas settings of 75.
Amseco SSS2-75110 Category : AmsecoThe strobe part of this alarm is actually just placed over what could serve as a stand-alone speaker.
