Honeywell ADEMCO VISTA VISTA-20PSIA - Manual (Page 21)

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Disarming and Silencing Alarms
Using the [OFF] key
The OFF key is used to disarm the system, silence alarm and trouble sounds, and
clear alarm memories.
IMPORTANT: If you return and the main burglary sounder is on, DO NOT
ENTER, but CONTACT THE POLICE from a nearby safe location.
If you return after an alarm has occurred and the main sounder has shut itself off,
the keypad will beep rapidly upon your entering, indicating that an alarm
has occurred during your absence.
LEAVE AT ONCE, and CONTACT THE POLICE from a nearby safe location.
1. + 1 OFF
(Security Code)
The “READY” indicator light will be lit if all zones
are secure, and the keypad will emit a single tone to
confirm that the system is disarmed.
NOTE: If entry delay has started (you’ve opened the
entry door), you do not need to press the OFF key –
simply enter your security code. The system will
disarm in about 15 seconds after the last digit of the
code is entered.
Alpha Display:
∗∗∗∗DISARMED ∗∗∗∗
READY TO ARM
Fixed-Word Display: READY
2. To Silence a Burglary Alarm and Clear a Memory of Alarm
Enter your security code and press the OFF key to silence the alarm (or
warning tones of a Memory of Alarm).
Note the zone in alarm on the keypad display, and correct the problem (close
door, window, etc.). After correcting the problem, enter the security code plus
OFF sequence again to clear the keypad’s Memory of Alarm display.
3. To Silence a Fire Alarm and Clear a Memory of Alarm
Simply press the OFF key to silence the alarm. Then enter the security code
plus OFF sequence twice to clear the keypad's Memory of Alarm display. See the
Fire Alarm System section.