Cellular Alarm Communicators Frequently Asked Questions

What is the CRC Code For?
The CRC, or cyclical redundancy check, is in place to keep programmers from making typographical errors when activating a communicator. Learn more here!
Added:

Can I Use a Cellular Communicator on a VISTA 21iP?
You can use a cellular communicator on the Vista-21IP. The cellular communicator connects directly to the board. Learn about the 21ip Cellular Communicator.
Added:

Can I Use a 3GL GSM on a Honeywell L5100?
No, the 3GL is not compatible with the Honeywell L5100 control panel. There is a 4G compatible GSM. Find out which 4G cellular communicator is compatible.
Added:

How do I Register the L7000's 3GL?
The Honeywell 3GL AT&T cellular communicator requires an AlarmNet registration by a certified Honeywell dealer. Learn more about the registration process here.
Added:

Will the VISTAs Work with the 4G Networks?
VISTA alarm systems can work with 4G cellular networks. There are five 4G cellular communicators available for the systems. Learn which one is right for you.
Added:

Can I Change the Rev Chip on a Vista 21iP?
Honeywell sells a PROM Chip for older versions of the VISTA 21iP that allows these systems to be used with Total Connect 2.0. Learn how to change the VISTA 21iP Rev Chip.
Added:

How Do I Enable the GSMVLP4G on my Honeywell L3000?
Once the GSMVLP4G has been physically installed, you must enable it in programming. Learn how to enable cellular alarm communication on the LynxPlus.
Added:

Will the Antenna for a 7845 Work on a 4G Radio?
The Honeywell 7845i is an internet communicator for Vista panels that has no antenna. 4G Vista radios can have an antenna added. Learn about Vista antennas.
Added:

What Receiver Format Sends 5555 5555 5555?
Alarm panels have the ability to send signals to a central station in a variety of different formats, including High Speed. Learn more about High Speed format!
Added:

What Do the Lights Mean on a GSMV4G?
The Honeywell GSMV4G three LED's can indicate various types of status, such as registration, and trouble conditions. Find out what each LED indicates.
Added: