Outdoor weatherproof intercom with SIP protocol, with steel front plate, metal pushbutton and internal loudspeaker and microphone protective grille. Bi-directional full duplex audio with acoustic echo cancellation and noise reduction. Firmware update and remote configuration through web server. Power 5 VDC or PoE. Active call indicator LED. Remote control for door opening. Second active contact in communication or call for integration with other security systems. To install in ceiling or recessed (box not included).