Akuvox S539 Flush Mount Bracket offers It allows to connect up

It allows to connect up to 9 devices

EIA 568A and 568B Network cables Shielded category 5 (or higher) Dimensions 185mm x 45mm x 45mm Mounting Wall of shelf Environment Indoor or Outdoor Environmental Conditions Operating Ambient Temperature: -25 to 55℃

Provides a graphical interface to the major functions of a Solution 2000 or 3000 alarm panel

Surface-Mount

Includes 72 hour Lithium polymer battery backup in case of AC power failure

Akuvox S539 Flush Mount Bracket offers It allows to connect upIn Wall Mounting Back Box for Akuvox S539 Door Intercoms Flush mount Back Box Compatible with Akuvox S539 Door Intercom devices Steel construction