Wired Zone Expanders Frequently Asked Questions

Can I Increase the Max Number of Zones On My Hardwired Security System?
To utilize all of zones on a wired alarm system, it is necessary to add wired zone expansion modules and/or a wireless receiver. Learn about zones on a hardwired alarm panel.

4208U Vs. 4208SN
The 4208U and the 4208SN are both 8-Zone hardwire expansion modules with some differences between them. Read on to learn about these two polling loop expansion modules.

Can I Use a Honeywell 4219 Zone Expander on a VISTA-50P?
The VISTA-50P is a polling loop alarm panel, and it can only support polling loop zone expanders. It will not support a Honeywell 4219. Learn about the VISTA-50P.