Honeywell VISTA-21iP Frequently Asked Questions

Can I Use a Cellular Module w/ VISTA Security Systems?
Find out if a cellular module can be used with a Vista security system
Added:

Can I Use the Lyric Gateway with a Honeywell VISTA Wired Security System?
Learn why a Lyric Gateway cannot be used with a Honeywell VISTA Wired Security System
Added:

Can I Activate A GSMX4G If I'm Not A Dealer?
Find out if a GSMX4G can be activated if you are not a dealer
Added:

Which Panels Are Compatible With The GSMX4G?
Find out which panels are compatible with the GSMX4G
Added:

Why Can't I Upgrade the PROM on My Vista-21iP?
Learn more about the ability to upgrade the firmware on the Honeywell VISTA-21iP
Added:

How do I program my panel to delay on an AC loss?
Learn why you cannot program a panel to delay on an AC loss
Added:

Can I use Lyric as a keypad on 15P, 20P, 21iP, 128bpt?
Can the Lyric be used as a touchscreen keypad for other systems?
Added:

Can I change the sound on a 6160 from steady to warble?
Learn why the sound cannot be changed on a 6160 from steady to warble
Added:

How do I make a 5834-4 operate on high security mode?
Learn how to make a 5834-4 operate on high security mode
Added:

How do I install a 4-wire smoke on my VISTA-P system?
Wiring and resetting 4-wire smokes on a P Series panel.
Added: