Model No. AST-3201 Built-in Web server. Embedded linux OS. Realtime audio and video signals transmission. Supports Pan/Tilt/Zoom protocols. Image size on PC adjustable Digital sensor input/output available Motion derection alarm CCD： 1/4 SONY TV Lines： 420TVlines Compress format： MPEG-4 Resolution： D1／CIF(／QCIF Audio format： A-LOW／U-LOW Protocol： TCP／IPHTTPUDP/IPPINGARPDHCPSMTP P/T/Z control： RS232/RS485;PTZ control GPIO;sensor inptu/active Frame rate： Max:30frame/sec.per channel Connector： RJ45、COM、BNC Power： DC12V/5MA Working environment： -5℃～45℃ N.W.： 665G