NVC90WD-42S 420 TVL, 0.5LUX,1/3 SONY Super HAD CCD NVC90WD-50S 520 TVL, 0.5LUX,1/3 SONY Super HAD CCD Auto Iris Control DC drive Video Compression H.264 Baseline Profile@Level 2.2 Video Definition CCD PAL:352*288(CIF),704*288(2CIF),704*576(D1); NTSC:352*240(CIF),704*240(2CIF),704*480(D1) CMOS VGA: 640x480, QVGA: 320x240 Video Frame Rate CCD PAL: 1-25frames/second NTSC:1-30frames/second CMOS 1-30frames/second Video Compression Bitrate 16Kbit/S~4Mbit/S Audio Input 1channel,linear input Audio Compression G.726 Audio Output 1channel,RCA interface, linear output Audio talk-back Built-in Mic Supported Protocols TCP, UDP, IP, HTTP, FTP, SMTP, DHCP, DNS,ARP, ICMP, POP3, NTP, IPsec, UPNP,RTP,RTCP System Interface 10M/100M self-adapting Ethernet port, 1 RS485 port (supports transparent protocols) WiFi port(802.11b/g wireless network) SD card slot 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