
Digtal audio door phones CDN are one of the most modern avalible this type.
Solid, uneffected by weather conditions construction and modern and estetic appearance
make this devices ideal to use first of all in multifamily buildings, where entry phones
are especially open for acts of vandalism. CDN audio door phones let to build complicated,
multientry systems consisted even of a few dozen CDN entry phones. Positiv opinions of
housing associations, and many other companies make you sure[...]