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Resetting code on napco express xp400 alarm

I moved recently to this rented unit and have the napco xp 400 alarm, I enable it but because I don't have the access code I can't disable it. I have to unplug it during the day and plug it at night. I shut down the ac to see if this would work but it didn't. I want to be able to arm and disarm the alarm.

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Posted on Jan 02, 2017

  • 2 Answers

SOURCE: Disarming / Access Code/ Resetting

Ask seller or previous owner the code, or read in the manual how to reset the system to factory defaults
On the previous version (Simon3) it was press cancel + clock set + Minutes+ at the same time and the power up from battery

Posted on Jan 12, 2009

  • 1 Answer

SOURCE: uniden vs1100xr car alarm will

I had the same problem with my vs1100xr. The remotes for these (and other) unidens have a rolling code. Seems to me that either the remote runs out of new codes and cycles back to the beginning, or the alarm base unit somehow loses track of the codes. Either way, the alarm base unit stops accepting the codes of your remote, and so needs to be purged of its code tracking memory - reset, if you like. This is essentially the procedure for training the alarm base unit to recognise new remote (and forgetting old remotes).
This procedure is:-
1) Disarm alarm, or if in valet mode, take it out of valet mode (push valet button 3 times)
2) Turn the ignition on and off 2 times within 15 seconds.
3) Put the alarm into valet mode (push valet button 3 times) within 15 seconds of completing step 2. Alarm should beep, and remote training has started.
4) Within 15 seconds of completing step 3, push the button (#1) of the first remote you wish to use for the alarm. Alarm should beep, indicating acceptance of remote. Repeat for other remotes you wish to use - up to 4 in total. (Once the first remote has been accepted, you have all the time in the world to make the alarm learn other remotes)
5) Turn ignition on and off to end remote learning mode. Alarm should beep 2 times. New remotes have now been learned and previous remotes forgotten.

Some of these details may vary from country to country - who knows. If this doesn't work, I suggest that you contact Uniden in your country to obtain the procedure. Took me a few tries to get the timing right, what with the valet button hard to get at and having only 15 seconds between steps.

Posted on Apr 18, 2009

  • 12 Answers

SOURCE: New house, existing Simon3. How to access to add new sensors

I believe there are 2-3 different access codes-INSTALLER,USER,-Ive also had problems with programming the transmitters into certain " groups" with store bought units.

Posted on Jun 20, 2009

  • 1 Answer

SOURCE: Toad car alarm - text alert texts when arming and disarming alarm

yes this is aknownprobplem to Scorpion (Toad), you will need to use relays on the trigger wires

Posted on Nov 14, 2009

  • 1 Answer

SOURCE: viper alarm keypad will beep for 30 seconds every time I arm or disarm

Change the battery, 2-way remotes require 2 slim batteries on top of one another. Regular remotes only require 1.

Posted on Nov 16, 2009

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