Securitron MSS-1-RT User Manual

Page 3

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PN# 500-16710

Page 3

Rev. A, 03/11

3.2 OUTSWINGING DOOR INSTALLATION
The MSS-1 version with long jacketed cable is
intended for a protected and unobtrusive installation

on outswinging doors. The drawing to the right
shows the preferred configuration.

Start by mounting the magnet pack on the door.
Note that the magnet pack has two sets of screw
holes. Select the magnet pack position so that the
arrow on its label is pointing towards the

switch module. As the drawing shows, the label is
on the top of the pack (facing up). Then mount the
magnet pack as shown. Drill 7/64” (2.75MM)
diameter pilot holes for the #8 mounting screws.
Don’t drop it below the door stop by more than 1/8”

(3MM) as it must remain roughly in the same plane
as the switch.

Next, mount the switch. Set the leading edge of the switch to match the separation distance
printed on the label. Make sure the switch label arrow points at the magnet pack arrow and,
using the template, drill 7/64” (2.75MM) diameter holes for the #8 mounting screws and a 3/8”

(9.5MM) diameter hole for the cable which will be concealed in the door frame. If you are
planning to use the tamper feature of the switch, drill a 3/32” (2.25 MM) diameter hole for the
#6 tamper screw, again following the template. Be sure to use the two metal washers on
the tamper screw to yield the correct height. This installation technique produces an
attractive and high security result. Note that with this mounting method, the magnet pack
cannot be removed without opening the door which would result in an alarm event.

Some outswinging doors pose special problems. Many aluminum frame glass doors have what is
called a blade stop. This is typically about 1/8” (3MM) in width and obviously cannot accept the
switch. There are two solutions for this situation. The most professional is to cut out a section
of the blade stop just large enough to mount the magnet pack on the door. The switch than
mounts directly on to the header which also conceals the cable. An alternate method is to

employ a spacer block to position the switch down far enough to clear the blade stop. The
magnet pack can then mount lower on the door. This method requires pulling the cable through
the spacer block up into the header and also has the disadvantage of weakening the security of
the tamper switch. The tamper switch will trigger if the switch module is removed from the
spacer block but not if the spacer block is removed from the header while being held tight
against the switch module.

Another door problem can occur if a conventional stop is not as wide as is necessary to mount
the switch (considering the set-back needed for the magnet pack and separation distance). The
back part of the switch will be hanging in space. A spacer piece can be added to the stop to
widen it, but note that the switch module can be successfully mounted with only its two front
screws. The cable exit has been deliberately located forward so that the cable can be concealed

successfully in a narrow door stop. The tamper switch, however, may be unusable.

3.3 INSWINGING DOOR INSTALLATION
The MSS is generally mounted on the inswinging side
of a door when that side represents the protected
area. The drawing to the right displays a cross section
of this configuration. It shows the unit mounted at the

top of the door but naturally the unit can also be
mounted on the side.

Start by mounting the magnet pack on the door. Note
that the magnet pack has two sets of screw holes.
Select the magnet pack position so that the arrow on

its label is pointing towards the switch module.
As the drawing shows, the label is facing towards the
door. The magnet pack should then be mounted as
shown. Drill 7/64” (2.75MM) diameter pilot holes for the #8 mounting screws.

STOP

HEADER

DOOR

SEP

AR
AT
IO

DI
S

NCE

CABLE

MAGNET
PACK

SWITCH
MODULE

LABEL

TAMPER
SCREW

SEPARATION
DISTANCE