Features: 1) 4ch real time audio and video recording, total 120 frames per card 2) Accordance with PCI 2.1 standard 3) Support Windows NT, Windows 2000 4) Real time video compression, without frame lost 5) Real time audio compression 6) Real time compound AV code stream 7) Overlay time and LOGO on the video image 8) Set the frame format of encoding (I, B, P frame sequence) 9) Set image quality 10) Set the brightness, contrast and saturation of video signal 11) Support WARTER MARK technology 12) G.271 audio compression, 8kbps bandwidth 13) Independent compression and compound of AV signal on board, one PC supports 24 channels 14) Video and audio synchronous 15) Preview resolution is 4CIF 16) Support motion detection, time generator and Water Mark 17) Dynamic set frame ration and picture quality 18) LAN delay less than 1 second Video 1) Video input: 4ch composite video signal 2) Mode: PAL, NTSC 3) Resolution: 352 x 288 (PAL), 352 x 240 (NTSC) 4) Frame ratio: 30F/S 5) Output code ratio: 70kbps-1000kbps 6) Video input port: BNC 7) Video input impedance: 600Ω 8) Video input range: Vp-p=1.0V Audio 1) Audio input: 1ch audio line input 2) Sample ratio: 8KHz 3) Output code ratio: 32kbps 4) Audio: mono 5) Audio input impedance: 600Ω 6) Audio input range: Vp-p=2.0V, volume range 83DB Price Condition FOB SHENZHEN by T/T or L/C Origin CHINA Delivery lead time 1~7 days