Simplex 2901-9838 Category : Simplex Same idea as the other 2901-9838 spare cover that I own. Brand SimplexModel 2901-9838Manufacturer FaradayType Alarm Cover
Simplex 477-669 Category : SimplexOddly enough, the model number on this particular smoke doesn’t fit the typical pattern for Simplex devices.
Wheelock AES-DL1-WS-24 Category : WheelockDepending on which set of inputs has power applied to it, the alarm will produce a different tone.
