Digital Key Switch  (490-0535A)   Problem Solving      Faxback Doc. # 6866

We don't expect you have problems, but if you do the solution is probably
listed below.

  Be sure all connections are correct, and secure all stray or broken
  wires.

  Check for the proper setting of the LATCH IN/OUT switch.

IF YOU HAVE TO ENTER YOUR SECURITY CODE TWICE, MOVE THE LATCH SWITCH TO
THE OUT POSITION.

Remember - disconnect power from the Digital Key Switch before you change
           the position of the LATCH IN/OUT switch.Otherwise, the
           microprocessor will not recognize the change in the switch
           setting.

  Make sure power is ON to the Digital Key Switch and the alarm system.

Remember - The security code will reset to the preset factory code (1 2 3
           4) if power is disconnected.

  If you forget the code, temporarily disconnect POWER to reset to the
  factory code.

Note:  If your system has battery back-up, you must also temporarily
       disconnect the battery power before you reset the code number.

  If you cannot reset the alarm from the Digital Key Switch after
  activating the panic circuit, your alarm system is not equipped for this
  feature.  Reset the alarm from the main alarm unit.

If none of the above solves your problem, go to your local Radio Shack for
advice.

Important:  The unit does not accept any key input during the 2.5 second
            remote relay or panic relay contact time.  After the contact
            time unit starts normal operation.

(LB/all-7/12/94)