... NVR 1,4CH digital video input 2,4CH 720P recording 3,H.264 compression 4,1CH simulation BNC/VGA video out 4CH digital video ... digital video input,4CH 720P recording 2, adopt standard H.264 compression 3, 1CH simulation BNC/VGA video output, 1CH audio input, 4, support audio ... phone monitering (WinCE/Symbian /iPhone/Blackberry/Android) 8, support 1 SATA HDD,max capacity 1T,support U disk,DVD recorder ...