Wheelock AS-24MCCH This is a ceiling mount device. Brand WheelockModel AS-24MCCHManufacturer WheelcokType Alarm (Horn/Strobe, 2-wire)
Notifier BG-1 Category : NotifierThis unit’s physical condition is somewhat decent, but it is missing its switch unfortunately.
Wheelock 7002T-24 Category : WheelockThis 7002T-24 could be used for general signaling purposes as it grey and the strobe is not labeled.
GE 521BXT Category : GEI think that this smoke detector might be intended for use in security systems.