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V-Plex Short Isolator Module, Detects/Isolates Polling Loop, Isolate Burglary Devices, LED Indicator, Powered from Polling Loop, Low Power Consumption

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Honeywell ADEMCO VPLEX-VSI V-Plex Short Isolator Module



Designed to work on all Honeywell V-Plex polling loops, the VPLEX-VSI provides short circuit isolation for devices on compatible control panels. When a short occurs on a polling loop branch, it illuminates a trouble LED and isolates the defective branch from the system — enhancing life safety and protection while reducing troubleshooting time and maintenance costs.




  • Detects and isolates polling loop branches with complete or resistive shorts, and overload or defective polling loop devices on initial power up
  • Can be used to isolate burglary devices from fire devices, increasing life safety and protection
  • LED indicator reduces troubleshooting time and maintenance costs
  • Can be used on all qualified controls that support the ADEMCO V-Plex two-wire polling loop
  • Operates automatically on qualified controls without the need for changes to existing control hardware or software
  • Powered directly from the V-Plex two-wire polling loop
  • Can be placed on any major or minor branch in any configuration on the polling loop
  • Low power consumption
  • Designed to meet appropriate regulatory agency requirements


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