Video input: 4 channel video input standard BNC port Audio Input: 2 channel BNC standard jack (two sound channel) Video System Format: PAL/NTSC Alarm: 3 channels alarm input and output, beep alarm, customer notification Storage Mode: Support centralized video server network storage PTZ control: RS485 interface, support PELCO_D and PELCO_P protocol, support open channel transmission Dynamic IP management: Built-in DHCP Server, support dynamic IP address WEB Management: Built-in HTTP Server, provide WEB management, convenient view and set up the current parameter Video Management: Webpage format, program model freely setup Picture Delay: Less than 1second (LAN) Picture Quality: 1-63 grades adjustable Video Coding Size: CIF: 352×288, support D1: 704×576, Half D1: 704×288 Bandwidth Occupation of Video Streaming: 25 KBps (resolution 352×288, 15frames/s,picture quality 45grade) Power Port: External power adaptor, 5V DC,1A Power Consumption Less than 5W Device Dimension: 205mm×153mm×51mm(L*W*H) Working Environment: Temperature-10~+ 55ºC,Humidity 10~90%