STI-9754 Strobe Wire GuardSTI borrowed from natures master builder, the spider, to create a web of protection from vandalism and accidental damage with these tough wire guards. They are constructed of 9 gauge steel wire with corrosion resistant polyester coating.

and supervisory interface

eBayProduct OverviewThe Potter BBK-1 Back Box is a mounting accessory designed for use with bell signaling devices

It supports Style B (Class B) or Style D (Class A) wiring

and infrared (IR) sensors

Model CAB3-BB from Siemens – Fire Safety is the black back box used on black

including wall post indicator and butterfly types

plain-face enclosure

Power: 24VDC

and controlled from a Simplex fire alarm control unit (FACU) IDNAC Signaling Line Circuit (SLC)

Core Function(s): Houses a spot-type TrueAlarm photoelectric smoke sensor for duct smoke notification

Honeywell BDA-TP15-L2 High Power Tapper 136 960MHz 15dB

and an optional semi-flush trim ring