Wheelock MT-24-LSM Category : Wheelock I believe that this MT is newer than the Wheelock MT4-24LSM, yet older than the Wheelock MT-24MCW. Brand WheelockModel MT-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.
System Sensor CH24MC Category : System SensorThis alarm just looks like a slightly smaller version of the SpectrAlert Classic speaker/strobe.
Potter SH-1224 Category : PotterThe appearance of this alarm is like a mix between a System Sensor SpectrAlert Advance and a Gentex Commander 3....
