Simplex 4255-1 Category : Simplex This is a moderately old heat detector. Brand SimplexModel 4255-1Manufacturer ChemtronicsType Heat Detector
Amseco MSB-10B-PV4 Category : AmsecoThis bell is specifically meant to be used in a fire alarm system.
Wheelock NS-24MCW Category : WheelockThis is just a standard red, two-wire NS with a multi-candelas strobe.
