... 7 Two-way audio 8 PoE and WiFi optional Specification Camera Image Sensor 1/2.5" Progressive Scan CMOS Min. ... , Contrast adjustable through client software or web browser Network Protocol Protocols TCP/IP,HTTP,DHCP,DNS,DDNS,RTP/RTSP, PPPoE, SMTP ... RS-485 interface Intelligent Alarm Motion Detection, Video Loss, Network Disconnect, IP conflict, Storage exception Alarm Input 1 channel Alarm Output ...