TO31S9-4-31-1 Chg 1
assembly), and an actuating magnet assembly
door itself. The switch assembly and magnet are
(magnet). The switch assembly is installed on a non-
configured to provide for concealment of the mounting
moving surface. The magnet is installed on the moving
hardware to prevent unauthorized removal after
surface. If used to secure a window, the magnet is
installation, without causing an alarm condition. The
installed on a part of the window that moves whenever
relationship of the BMS to other J-SIIDS components is
the window is opened. The switch assembly would then
illustrated in figure 1-2.
be installed on a nonmoving part of the window (frame).
If used to secure a door, the magnet is installed on the
Figure 1-1. Balanced magnetic switch SA-1955( )FSS-9(V).
actuated switch, an adjustable biasing magnet, and a
a. Switch Assembly.
The switch assembly is
tamper switch which is activated whenever the cover is
fabricated as an aluminum box, with cover. Each end of
removed. The assembly is configured to provide for
the box is threaded to allow interfacing with l/2 -inch
concealment of the mounting hardware to prevent
electrical conduit. A threaded plug is provided with each
unauthorized removal after installation. The cover is
assembly for installation in either conduit access hole.
provided with a weather seal gasket.
This plug is internally secured by means of a slot-head
connections are internally
screw. The switch assembly contains a magnetically