Wheelock MT4-24-LSM This is an earlier version of the MT. I do have two of these. Brand WheelockModel MT4-24-LSMManufacturer WheelockType Alarm (Horn/Strobe)
Simplex 477-669 Category : SimplexOddly enough, the model number on this particular smoke doesn’t fit the typical pattern for Simplex devices.
Silent Knight 5204 Category : Silent KnightThis particular panel has some sort of extra board mounted on top of the main circuitry. I also have the...