_:nf6d7055ecfaf44aa8be150ce394418edxb0
<http://schema.org/description>
"Features\n\nHandsets available in 1, 3, 6, 12 and 24-station sizes\nDoor answering (audio or video) can be added (1 or 2 doors).\nPaging to one or multiple zones, with optional talkback\nExternal signaling device activates when called (RY-AC/A required).\n"
<https://www.certifiedalarmdist.com/products/213410>