Digital Key Switch
(490-0537)                 Installation               Faxback Doc. # 19965

INSTALLATION HINTS:

    Before installing the keypad, temporarily connect the alarm and the
    keypad terminals to confirm proper operation.  If you have problems,
    see "Troubleshooting" Faxback Doc. # 19967.

    Install the switch indoors away from dust, dirt, and temperature
    or humidity extremes.

1.  Select a location on the wall next to a wall stud.

2.  Using a single-gang electrical box as a template, 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.

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", Faxback Doc. # 19964.

    To make a connection:

    a. Loosen the keypad's screw terminal.

    b. Strip 1/2 inch of insulation from the wire end.

    c. Place the bare wire under the washer on the terminal.  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.

    When set to OUT, the keypad shorts the remote terminals for 2 1/2
    seconds 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:  Set LATCH 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 keypad.  Then remove the
    keypad's front cover.

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.


(SP/YO/all-03/12/96)