Wheelock HSW-24 Category : Wheelock This is a very odd remote strobe. I’m not sure what series of alarms it was produced for, if any. Brand WheelockModel HSW-24Manufacturer WheelockType Alarm (Strobe)
System Sensor PS412 Category : System SensorThis is a 12-volt strobe meant for uses with alarms such as the System Sensor PA400R.
GE 521BXT Category : GEI think that this smoke detector might be intended for use in security systems.
