Cellular Alarm Communicators Frequently Asked Questions

How Can I Connect Wirelessly to a 2GIG GC3 with an iPad?
An iPad can connect wirelessly to a 2GIG GC3 system with the downloadable Alarm.com app. Learn how to configure Alarm.com on a GC3 alarm and automation system.
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What Is the City ID on Honeywell Total Connect?
The City ID is used by the alarm dealer to create a Total Connect account, and is never used by the end-user. Learn more about the City ID by reading here.
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Does My VISTA-21iP Support 4G Cellular Communication?
The VISTA-21iP does support 4G cellular communication with the addition of the Vista-GSM4G, or an external 4G device. Read on to see how to add 4G cellular.
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Will a GSMX4G Work on a VISTA-20P With a 5.2 Revision Chipset?
The Vista-20P version 5.2 supports the GSMX4G as a communicator, and for upload/download, but does not support Total Connect 2.0. Read on to learn more.
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How do I set up GeoFence arming reminders on an iOS device in TC2.0?
GeoFence arming reminders alert when an associated device leaves the designated area, and the system is not armed. Learn to create a GeoFence arming reminder.
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What is an 803 Signal on a VISTA Panel?
When an AlarmNet device on a Vista panel indicates a trouble condition for itself, it uses zone 803, to prevent confusion with a protection zone. Read on!
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How Do I Register the Sim Card in a Lyric Gateway Cellular Communicator?
The sim card in a Lyric Gateway Cellular Communicator can only be registered by a Honeywell dealer. Learn how to register the cellular communicator's sim.
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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!
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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.
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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.
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