Supports IE, DDNS, and client software to realize the real-time surveillance and play-back Supports internet listening, internet broadcasting, two-way audio function, built-in microphone, and speaker Supports local and internet storage, built-in microSD port, integrated with many internet storage protocols, supports network hard disk function Integrated wireless alarm gateway function, supports many kinds of remote controllers, and wireless detectors Variety of internet protocols, supports IPv4/IPv6, HTTP, TCP, ICMP, RTP, UDP, IGMP, RTCP, SMTP, FTP, DHCP, DNS, DDNS, and UPNP Supports local and internet alarm, mobile alarm Supports video motion detective, privacy protection mode Supports SDK integrated development, alarm linkage Image sensor: 1/3-inch Sony HAD CCD Horizontal resolution: 520TVL Infrared light: infrared LEDs, effective range up to 10 to 20m Video compression: H.264 baseline profile at level 2.2 Video resolution: CCD: PAL: 704 x 576 pixels (D1) NTSC: 704 x 480 pixels (D1) CMOS: VGA: 640 x 480 pixels QVGA: 320 x 240 pixels Video parameters: brightness, hue, contrast, saturation, and image quality Video frame rate: CCD: PAL: 1 to 25fps NTSC: 1 to 30fps CMOS: 1 to 25fps Video bit rate: 16kbps to 4Mbps Audio input: 1 channel microphone or linear input (configured by software) Audio compression: G.726 Audio output: 1 channel linear output Supports protocols: TCP, UDP, IP, HTTP, FTP, SMTP, DHCP, DNS, ARP, ICMP, POP3, NTP, IPsec, UPNP, RTP, and RTCP System interface: 10Base-T/100Base-TX Ethernet port: 1 RS-485 port Wi-Fi port: (802.11b/g) SD card port Alarm input: 1CH on/off input, supports NO (normally open) or NC (normally close) Alarm output: 1CH relay output, 120V AC, and 1A/24V DC