420 TVL, 0.5LUX, 1/3 SONY Super HAD CCD 520 TVL, 0.5LUX, 1/3 SONY Super HAD CCD Video compression: H.264 Main Profile@Level 3/MJPEG optional Build in 4-9mm varifocal lens Video parameters: brightness, hue, contrast, saturation, image quality Streaming format: optional video streaming or audio and video composite streaming Video frame fate: 1 - 30 frames/second Video compression bit rate: 16Kbit/S - 8Mbit/S Audio input: 1channel, linear input Audio compression: G.726 Audio output: 1channel, RCA interface and linear output Audio talkback: built-in Mic Supported protocols: TCP, UDP, IP, HTTP, FTP, SMTP, DHCP, DNS,ARP, ICMP, POP3, NTP, IPsec, UPNP, RTP, RTCP System Interface: Build in microphone, speaker and buzzer 10M/100M self-adapting Ethernet port 1 RS485 port (supports transparent protocols) SD card (maximum 32GB) Alarm input: 1 channel on/off input, supporting No (normally open) or NC (normally close) sense Alarm output: 1 channel on/off output, 120VAC 1A/24VDC 1A Input power supply: DC 12V, 1A Maximum power: less than 6W Operating temperature: -10 - +55℃ Operating humidity: RH85%MAX System requirements: Operation system: Microsoft Windows 98/ME/2000/XP/2003 Browser: Microsoft Internet Explorer 5.x or above Dimension: 14cm (L) x 14cm (W) x 10.8 (H) Net weight: 0.56kg