DIY Wired Security Systems Frequently Asked Questions
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.
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.
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.
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.
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:
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: