Digital Keypad
(490-0452)                 Connections                Faxback Doc. # 17353

CONNECTING TO THE ALARM SYSTEM

Follow these steps to connect the keypad to the alarm system.

1.  Route four-conductor cable, such as Radio Shack Cat. No. 278-386, from
    the alarm system to the location where you will install the keypad.

2.  Use the information in the following table to connect the wires to the
    alarm system and keypad.  Secure the wires to the keypad by stripping
    about 1/2 inch of insulation from the end of each wire, loosening the
    terminal screw, placing the bare end of the wire under the terminal
    clamp, and tightening the screw.  Take care to prevent the wires from
    touching adjacent screw terminals.

      Keypad                  To 49-485               To 49-451
    Terminal                Terminal No.             Terminal No.
    _____________________________________________________________
       (+)                       39                       9
       (-)                       42                       7
        1                        40                       10
        2                        41                        8

NOTE:  If you connect one or more of this type of keypad to a 49-485 alarm
       without also connecting a 49-484 keypad, you must connect a 1.2K Ohm
       resistor (Radio Shack Cat. No. 271-1119) between the + and _
       terminals.

ASSIGNING THE KEYPAD ADDRESS

Each installed keypad must have a different address to properly communicate
with your alarm system.  If you are installing only one keypad, and there 
are no other keypads already connected, you do not need to change the 
address.  If you are installing more than one keypad, or if there is
already a keypad installed, follow these steps if you need to change the
keypad address.

1.  If there are other keypads installed (including the keypad that is
    supplied with the 49-485 8-zone system), remove the installed keypads
    and note the position of the first two dip switches on the back panels.

2.  Using the tip of a pen, set the dip switches on each new keypad so no
    two keypads have the same setting.  There are four possible settings
    for each keypad as shown in this chart.

    Address           ADDR 1                  ADDR 2
       1               off                     off
       2               off                     on
       3               on                      off
       4               on                      on

TESTING THE CONNECTION

After you follow the steps in "Connecting to the Alarm System" and 
"Assigning the Keypad Address," follow the instructions in your alarm
system's owner's manual to arm and disarm the system using the keypad.

After you confirm proper operation, disconnect the cable from both the
alarm system and the keypad in preparation for installation.