Simplex 4251-21 Not quite sure how this pull differs from the 4251-20, actually. Brand SimplexModel 4251-21Manufacturer SimplexType Pull Station
Amseco FS1-1+SL-02 Category : AmsecoSL-02 is the model of the strobe, FS1-1 is the model of the sounder.
Notifier N-ANN-80 Category : NotifierThis device is part of a permanent mini system installed in my house.