... ,web alarm center),(WEB,client viewer)Support multiple-ch 3G, also support cottage phoneUnique tri-times watch ... maintenance costPowerful playback function, unique puzzle coding and multi-ch playback, make playback no delaySupport multi-language, custom ... hStorgeHDD, WEBBackup modelWEB,USB,USB-RWPortVideo input4 ch BNCVideo output1 ch BNC , 1 ch VGA output( VGA optional )Audio input1ch RCAAudio ...