Simplex 4255-1

This pull station, although similar in appearance (with the exception of the labeling) to my Pyrotronics MS-501, it is actually...

Category : System Sensor

MASS stands for “Multi-Alert Sounder/Strobe.” As the name suggests, it can do more than one tone. The only difference between...

Category : Notifier

This is basically just a Wheelock horn with a Notifer sticker slapped onto it.