Stainless steel entry panel with keypad, LED backlit. External Safety Keyboard in stainless steel with electronic push button, watertight type, which gives the whole unit a great resistance to weathering and continued use.Bidirectional Audio Full duplex. Nominal output power 1.5 Watt.Control. Network: Ethernet 10/100 Base-T. SIP (session initiation audio and video), RTP and RTCP. Operating in P2P-SIP or SIP (through IPBX Asterisk server)Configuration, remote upgrades and fault diagnosis through web interface.Housing: Stainless steel 2 mm, 5 mm smoked methacrylate. flush mounting with clamping frame and hidden screws for perfect wall adjustment on wall and vandal protection. Evacuation system of water minimizes the chances of damage by moisture or liquid intrusion.