... 170X series chip 3.Audio Compression Standard:G.726 4.Multi-windows,Alarm. Hardware Compression CardModel: ZS-1704HP 1. ... channels audio input ,RCA socket Details of functionHardware Filter Multi-layer hardware filter and De-interlace function,to improve the ... character brightness according to background birghtness.Motion DetectingMulti-windows,multi-zone are supported, it takes nearly no resources of ...