System Sensor 2W-B This detector is part of the i3 series of detectors. Brand System SensorModel 2W-BManufacturer System SensorType Smoke Detector (Photoelectric, 2-wire)
Wheelock NS-24MCW Category : WheelockThis is just a standard red, two-wire NS with a multi-candelas strobe.
Simplex/Standard 4080 Category : Simplex, StandardI’m not sure if this is actually a Simplex bell or a Standard bell. Although it’s labeled as Standard on...