Elenco Electronics MO-1251 Bedienungsanleitung PDF herunterladen (Seite 38)

44

FIG. 5-WIRE LACING

WILL PROTECT

a

screened

basement

window

or

a crawl -

space opening.

FIG. 6-IF

A WINDOW SCREEN

must be

removed and

lacing will

get in the way, use

a pull

-trap to 'cop :hrough

a

removable

trip

-wire lace. Cutting

the trip

wire will trig-

ger

the alarm.

Trying to move the

trip wire

will open

the pull -trap.

TO

OTHER

SERIES

LOOP

SENSORS

_

-1

BASEMEN" WINDOW

TRIP WIRE

r'ui..

, ¡

CABLE

CLAMP

/

SCREEN

OR

GLASS

PASS

THRU

CLAMP

PULL

TRAD

UNUSED BALL

CONTACT

BALL CONTACT

METAL

SEPARATOR

FIG. 7 -THIS IS HOW the pull

-trap is con-

nected to the protective

loop.

FIG. 8 -AN

AIR CONDITIONER

can

be

bugged

with a conventional

magnetic

switch.

at least a'' /z -inch,

wrapped with tape,

and then stapled to a beam

or other

wood support-even floor molding -

as shown in Fig. 9. There must be no

connections that are simply twisted

and taped, because they can oxidize

and cause false alarms.

If you use foil to bug

window glass,

you must cover the foil

with

clear

varnish or thinned, clear nail -polish.

Without

the protective covering,

the

foil will peel off the glass on the first

humid day.

You

can

really make a

mess

of

the job,

so use a 3/s -inch art-

ist's brush, span the brush across only

one

edge of the foil and try to "paint"

each side of the tape

in

a

single

pass.

Try not to go over the

same foil twice

except at the corners,

which

should

get at

least two, preferably three

coats.

Across the hinge

It you use toil on an entry door's

window

-and

every entry door hav-

ing a

window

through

which someone

can

reach should be bugged

with

foil

-as shown in Fig. 10, you span

across the

hinge

with

a door cord.

The

door cord shown

is

an

Ademco,

purchased in an electrical

-supply

store. It is preferred to the

Radio

Shack door cord because

of the posi-

tion

of the terminal screws.

The

screws on a Radio Shack cord are

arranged so

that they are almost im-

possible to access

if the door has its

hinges immediately adjacent to a

wall. (When you see the cord you'll

understand the problem.)

Take note

that a door's

window foil is connected

to the instantaneous protective

loop,

not the delayed door loop; you

want

the

alarm to go off the

instant some-

one smashes through

the

window,

not

45

seconds

later.

If you can manage to install

it with-

out hacking the

wall,

one of the best

entry-door

switches is the roller type

shown in Fig.

l 1. Mounted in the top

of the jamb

it is

almost

weatherproof;

and,

as shown, it does not interfere

with

the old -time (meaning

high -

quality) interlocking

weatherstrip-

ping. It's particularly useful

when the

door has

sagged on its

hinges, leaving

a

somewhat large gap between the

top

of the door and the

frame. The roller

switch is basically

a plunger switch

that pushes

in as the door

squeezes the

roller

wheel upward. It's a

hard

switch to locate,

but

worth

the effort

to search out

if needed.

If you can't

manage to

install a

FIG. SOLDER

ALL

SPLICES, E

nd then

staple

the taped

splice

to a wood sup -

port-a beam,

molding. etc.

FIG.

10-USE A DOOR

CORD

to

bridge a

fle)ible

connection

across a door

hinge.

FIG.

11 -A ROLLER

SWITCH

is among the

be ;t of the entry

-door "bugs," but

in-

stallation

takes quite a bit of skill.

If you

don't

think you can do it. don't.

FIG.

12 -A WIDE GAP between

the door

and its frame or

molding requires an over

-

size

magnetic switch. The standard

-size

magnetic

switch

held in the

hand is for

comparison.

concealed roller switch (or a plunger

switch) for the entrance door, use

a

magnetic switch. The problem

is

that

the most common switch, the one

shown being held in Fig. 12, must be

within %a

to 1/2 inch of

its magnet. In

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