Wheelock AS-24MCCH Category : Wheelock This is a ceiling mount device. Brand WheelockModel AS-24MCCHManufacturer WheelcokType Alarm (Horn/Strobe, 2-wire)
Notifier BNG-1R Category : NotifierThis is the oldest Notifier pull that I own which opens with the modern Notifier key.
System Sensor 4WT-B Category : System SensorThis 4-wire smoke detector also has a thermal heat sensor.
Siemens U-MHST-MCS Category : SiemensI believe that this alarm has the ability to produce multiple tones.
