DIY Wired Security Systems Frequently Asked Questions

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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What Interactive service Works w/ Honeywell Systems?
Alarm users now are more sophisticated, and want the ability to see and control their system remotely. See which services work with Honeywell Systems.
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How Many Wireless Zones Does a VISTA 10P Support?
The Honeywell Vista-10P control panel supports a total of 24 wireless zones. Find out what’s needed to add wireless devices to a Vista-10P control panel.
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Which Keypads Work with a VISTA 21iP?
The VISTA alarm systems are compatible with multiple different wired and wireless keypads. Learn about the keypads we offer that are compatible with the system.
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What Sensors Work on a VISTA-20P?
The Honeywell VISTA-20P is a wired alarm control panel but is also compatible with Honeywell 5800 series wireless devices. Learn compatibility details here.
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Should I Use Resistors on my VISTA 21iP?
When using hardwired zones, it is more secure and tamper proof to use End of Line Resistors to supervise zone wiring. Find out the pros and cons here.
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What Size Resistors Work on a Honeywell 4219 Zone Expander?
The only resistors that can be used with a Honeywell 4219 Zone Expander is a 2K-ohm rated resistor. Learn why the resistor is used and how to install them.
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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.
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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.
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