Radio Shack 49-537 User manual

Cat. No. 49-537
OWNER’S MANUAL
DIGITAL KEY SWITCH
Please read before using this equipment.
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2
INTRODUCTION
Your Radio Shack Digital Key Switch is a high-
quality, UL-approved security keypad that connects
to your alarm system and eliminates the need for a
key to arm and disarm your alarm. Instead, you
simply enter your personally selected four-digit
code.
The keypad’s microprocessor lets you select from
10,000 possible codes. You can change the code
as often as you like.
Your keypad has these features.
Selectable Arm/Disarm Mode Switch—lets you
use the switch to control a wide variety of security
systems or other remote-switched devices.
ARM and LOOP Indicators—show the alarm’s
status (if your system provides connections for
remote arm and remote loop indicators).
1994 Tandy Corporation.
All Rights Reserved.
Radio Shack is a registered trademark
used by Tandy Corporation.
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Panic Circuit—lets you quickly trigger the alarm
from the keypad.
Built-in Tamper Switch—sounds the alarm if
someone tries to remove or damage the switch.
Wrong Number Lockout—makes you wait 10
seconds between incorrect attempts to discourage
random code number entries by unauthorized per-
sons.
This product is UL listed under Standard Number
1023, “Household Burglar-Alarm System Units.”
Use only with UL-Listed security devices.
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CONTENTS
Will fix
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READ THIS FIRST
Properly connecting and installing the keypad
requires careful planning before
y
ou be
g
in. Read
this entire manual and plan your installation before
continuing.
This manual includes specific connection drawings
for Radio Shack alarm systems as well as general
information for use with other security devices.
Check your security device’s owner’s manual for
specific instructions.
Here are some important points to consider when
planning your installation:
•Where will
y
ou mount the ke
y
pad? — the
keypad is designed only for indoor installation. It
should be readily accessible to those who will
use it, but should not be easily seen by an
intruder.
•How man
y
wires do
y
ou need and how lon
g
must the
y
be? — determine this information by
reading “Connections” and checking your alarm
system’s manual.
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•What other hardware and tools do you
need? — you should mount the keypad in a
standard single-gang electrical box (the kind
used for single wall switches and AC outlets).
See “Installation.” Once you install this box, all
you need is a screwdriver to complete the key-
pad’s installation.
Note: You can mount the keypad directly on
wooden or plasterboard walls, without an elec-
trical box. However, the box gives added secu-
rity and protection.
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CONNECTIONS
This section gives basic guidelines for connecting
the wires from your alarm system to the keypad. If
you are using a Radio Shack alarm system, see
the separate wiring diagrams for the exact connec-
tions. The keypad is compatible with many alarm
systems. However, some systems might not use all
the keypad’s features. Also, each system requires
some variations in wiring connections. After deter-
mining the wiring requirements, see “Installation”
for actual installation instructions.
(illust of keypad’s back panel)
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REMOTE N.O.
(
Normall
y
O
p
en
)
Terminals—these
terminals connect to your alarm system’s remote
arm/disarm terminals. They provide the switch clo-
sure needed to arm and disarm the alarm.
Note: Some systems require connection to nor-
mally closed remote arm/disarm terminals. If your
system has a normally closed switch, you must set
LATCH to IN and enter your code twice to arm and
disarm the system.
TAMPER/PANIC (N.O.) Terminals—these terminals
connect to the alarm’s normally open tamper/panic
loop. These terminals provide the signal to trigger
your alarm if someone tampers with the keypad or
you press #and Q on the keypad at the same time.
Note: If your system only has a normally closed
panic loop, do not use these terminals.
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ARM LED Terminals
(
+/–
)
—these terminals con-
nect to the alarm’s remote arm indicator terminals.
Follow the marked polarity (+ and –) to make the
connection. When power is applied to these termi-
nals, the red ARM indicator on the front panel turns
on.
Notes:
• Some systems might not have connections for
remote arm indicators. These connections are
not necessary for operation.
• If your system has an LED symbol ( )
above its terminals instead of polarity markings,
use this drawing to determine the correct con-
nections.
I
llustration: Diode Symbol and connections
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LOOP LED Terminals— these terminals connect to
your alarm system’s remote loop indicator termi-
nals. Follow the marked polarity (+ and –). When
power is applied to these terminals, the green
LOOP indicator turns on.
Notes:
• Some systems might not have connections for
remote loop indicators. These connections are
not necessary for operation.
• If your system has the schematic symbol for a
diode, instead of polarity markings, use the
illustration of the diode symbol on Page 9 to
determine the correct connections.
POWER (DC10-18VDC) Terminals—these terminals
connect to a constant source of 10-18 volt DC
power provided by your alarm system. Follow the
marked polarity (+ and –). These connections pro-
vide power to the keypad.
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HOW AND WHEN TO USE THE
JUMPER
The keypad has a three-terminal jumper connected
to the positive (+) side of the ARM, LOOP, and
POWER terminals. If your system uses a common
positive power supply for these three connections,
you can route a single wire from your alarm panel
and connect it to one terminal. The jumper bridges
power to the other two terminals.
If your system has a common positive connection
for the indicators, leave the jumper where it is and
make connections similar to the drawing below.
Illustration: Connection positive common.
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If your system has common negative (–) connec-
tions for its indicators, move the jumper to the neg-
ative ARM, LOOP, and POWER terminals and make
connections similar to the drawing below.
If your system does not have polarity markings or
other means of determining the common terminal,
route a separate wire from your alarm system to
each terminal.
Illustration: Connection negative common.
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INSTALLATION
Installation Hints:
• Before installing the keypad, temporarily con-
nect the alarm and the keypad terminals to con-
firm proper operation. If you have problems, see
“Problem Solving.”
• Install the switch indoors away from dust, dirt,
and temperature or humidity extremes.
Refer to the illustration on Page 16 and follow
these steps to install the switch.
1. Select a location on the wall next to a wall stud.
2. Use a single-gang electrical box as a template
and make a hole the size of the electrical box.
3. Route connection wires from the alarm system
to the hole (through attic, walls, and so on) and
through a knock-out plug in the electrical box.
Leave extra wire for connection to the keypad.
4. Insert the box into the hole and nail it to the
wall stud; the box should be recessed slightly
below the surface of the wall.
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5. Connect the wires to the keypad terminals. If
connecting to a Radio Shack system, refer to
the supplied wiring diagrams. Otherwise, refer
to “Connections.” To make a connection:
a. Loosen the keypad’s screw terminal.
b. Strip 1/2inch of insulation from the wire end.
c. Wrap the bare wire around the screw termi-
nal. Be sure no stray wire strands touch any
other terminal.
d. Tighten the screw.
6. Set LATCH IN/OUT to the correct position for
your system.
• When set to IN, the keypad shorts the
remote terminals when you enter the code,
and keeps them shorted until you enter the
code again. Use this setting if the original
arm/disarm switch is a two-position switch
(one position for armed, the other position
for disarmed) or a normally-closed switch.
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• When set to OUT, the keypad shorts the
remote terminals for 21/2seconds when you
enter the code. Use this setting if the original
arm/disarm switch is a spring-loaded type,
normally-open switch that has a momentary
contact.
If you are not sure what setting to use with your
system, check your system’s owner’s manual
or contact the manufacturer.
Notes:
•SetLATCH IN/OUT before you connect
power to the switch. If you set it after power
is applied, the keypad might not recognize
the changed setting.
• If your system uses a normally-open switch
and you have to enter your security code
twice to arm/disarm the system, set LATCH
to OUT.
7. Remove the screw from the bottom of the key-
pad. Then remove the keypad’s front cover.
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8. Secure the keypad to the box using two
screws. Then replace the keypad’s front cover
and secure it with the screw you removed in
Step 7.
9. Connect the other end of the wires to the
appropriate terminals on your alarm system.
10. Carefully push the wires into the box and
attach the keyboard portion of the keypad to
the box using the supplied set screw.
Illustration: Installing the Key Switch.
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OPERATION AND TESTING
SETTING THE SECURITY CODE
When you first connect power to the keypad, and
any time after the keypad loses power, it uses the
preset factory security code (1 2 3 4). Follow these
steps to set your own security code.
Note: If you take longer than 10 seconds to com-
plete Step 2, 3, or 4, the keypad automatically
resets to the old code. Begin again from Step 1.
1. Press Q.
2. Enter the current security code.
3. Press Q again.
4. Enter your desired four-digit personal code.
Notes:
• We suggest that you avoid obvious numbers
such as your street address, birth date, and
so on. Also, it is a good idea to periodically
change your code.
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• If you make an error when entering your new
code, press #to clear the incorrect entry and
repeat this step.
5. Press Q to store the new code.
Note: If you forget the code number, temporarily
disconnect power from the keypad. This resets the
code to the factory default code (1 2 3 4).
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ARMING/DISARMING THE
ALARM
To arm the system, enter your code. If you con-
nected the keypad to your system’s remote arm
indicator terminals, the ARM indicator should light.
Note: If the ARM indicator lights when the system
is disarmed, you have probably connected the key-
pad to the wrong remote arm terminals on the
alarm system. Check all connections and try again.
To test the system, arm the system, then set off
the alarm to confirm its operation.
To disarm the system, enter your code. If you
enter an incorrect code, you must wait 10 seconds
to try again.
Notes:
• The keypad does not accept any key input for
21/2seconds after you enter your code.
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• If the keypad does not respond to your code,
there might have been a power failure while you
were away or there might be a loose,
intermit-
tent
connection at the POWER terminals. In
either case, the keypad resets to the factory
code (1 2 3 4) when power is restored.
ARM AND LOOP INDICATORS
The operation of these indicators varies depending
on the type of alarm system you use. Some sys-
tems use both indicators, while others might use
only one or neither.
In most cases, these indicators should respond the
same way as corresponding indicators on the main
alarm panel.
If you connect these indicators but they do not
work, check for loose connections or incorrect
polarity.
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