DVR network dvr,digital video recorder RS 485 Control,RJ45,with VGA, remote control ... 3G cellphone view,H.264 two way audio DVRnetwork dvr,digital video recorder16CH video and 3CH Audio 1CH Two way Audio ... (N.O,N.C)Display ModeFull Screen, 4/9/13/16 ch Split Screen, Auto SwtichDisplay Resolution720 x 480720 x 576Recording ...