Honeywell Home 4219 Wired 8-Zone Expander Module for VISTA-15P, VISTA-20P & VISTA-21iP

Brand: Honeywell Home
ADI #:4219 Model #: 4219  Name: Honeywell Home 4219 Wired 8-Zone Expander Module for VISTA-15P, VISTA-20P & VISTA-21iP