Ademco Vista 20P/PSIA - Quick Guide

Ademco Vista 20P and Vista20PSIA Panel and Keypad

For a detailed review of the entire system, please view the Ademco Vista 20P/ PSIA manual.

Arm and Disarm


  • To arm in STAY mode, when you are not leaving the premises, enter your [security code] + [3]. 
  • To arm in AWAY mode, when you are leaving the premises, enter your [security code] + [2]. 
  • To arm in MAXMIMUM mode, when no one will be in or around the premises for long periods of time, enter your [security code] + [4]. 


  • To disarm, enter your [security code] + [1]. 

For more information on this topic please visit the complete Ademco Vista 20P/PSIA manual.


  • The Ademco Vista 20P/PSIA operates on a UB 1270 battery.
  • Loss of AC power and use of backup battery power is indicated by NO AC.
  • A low battery condition is indicated by BAT.
  • For instructions on replacing your battery, please go to the Battery Replacement Page for this battery.


Bypass Protected Areas

Bypassing a zone allows you to arm your system with certain protected areas intentionally unarmed or to access a protected area when the system is armed.

  • To bypass a zone, enter your [security code] + [6] + [zone number]. 
  • Once the panel displays “BYPASS”, arm the system as usual. 
  • To display all bypassed zones, press [6]. 
  • To unbypass a zone, disarm the system. 

For more information on this topic please visit the complete Ademco Vista 20P/PSIA manual.

Change Date and Time

To change the time and date settings:

  • To change date and time settings, enter your [security code] + [#] + [6] + [3]. 
  • Wait until time/date are displayed, then press [*] to move the cursor ahead and [#] to move back.
  • Enter the 2-digit hour and minute settings, i.e., [06] and [17] for 6:17. 
  • Press [1] for PM or [0] for AM. 
  • Continue to enter 2-digit year, month, and day settings, i.e., [15], [08], and [23] for August 23, 2015. 
  • To exit, press [*] when the cursor is on the last digit. 

Chimes and Beeps

When your system is in chime mode, a chime alert will sound three tones whenever a protected door/window is opened.

  • To turn chime mode on and off, enter your [security code] + [9]. 
  • To turn voice chime mode on and off, press [#] + [0] + [2] + [4]. Voice chime can only be activated when chime mode is on. 

For more information on this topic please visit the complete Ademco Vista 20P/PSIA manual.


To silence an alarm and to clear memory of an alarm event, enter the [security code] + [1] sequence twice.

Security Codes

Your system will allow different security codes for use by other users, however only the Master user or Partition Programmer can assign user codes to users. 

Users are also assigned an Authority Level, which defines the functions a particular user can and cannot perform. 

  • To program a new user,enter your [Master/Partition Programmer code] + [8] + [user number] + [new user’s code]. 
  • To delete a user code, enter your [Master/Part. Prog code] + [8] + [user number] + [#] + [0]. 
  • To assign an authority level, enter your [Master/Part. Prog code] + [8] + [user number] + [#] + [1] + [authority level]. 

Some user authority numbers have been pre-programmed:

User Authority Level Explanation Assigned User Code
Standard Can only perform security function in assigned partitions.  [0]
Arm Only Can only arm the system.  [1]
Guest Can arm the system in assigned partitions, but cannot disarm the system unless the system was armed with this code. Perfect for babysitters, cleaners, etc.  [2]
Duress  Intended for use for when you are forced to arm or disarm the system against your will.  [3]
Partition Programmer Can do everything a Standard user can do plus assigning user codes to partitions.  [4]

For a complete list of use authority levels and partitions, please see the Ademco Vista 20P/PSIA system manual.

Trouble Conditions

Trouble conditions are indicated by the word CHECK and continual beeping from the touchpad. Any key will silence the beeping. A display of CHECK + zone no. may indicate that a problem requires your attention. Check the specified zone area, close any open doors or windows and enter your security code and press [OFF]. If your system includes wireless sensors, the CHECK condition may be caused by some change in the environment of the protected area.

To silence trouble beeps, press any key or enter your security code and press [OFF].

For a complete list of Trouble Conditions, please refer to the Safewatch and Ademco Systems Troubleshooting page.


The voice touchpad’s voice message volume can be adjusted. Adjusting the voice message volume also adjusts the status beeps volume. 

  • To adjust the volume, press [#] + [0] + [2]. 
  • Choose [3] to increase the volume and [6] to decrease the volume.