DH216 Series DVR, Choose 4, 8 or 16 Channel model. H.264 compression, supports D1 resolution video recording Security Certified Hard Disk with up to 2TB of data storage Back-up through USB port to Flash and optical drives Excellent quality live and recorded video and audio CMS application supports up to 10 DVRs simultaneously, 64 individual channels, view, playback and control GUI with mouse navigation for easy set-up and programming 3G Smart phone view, supports BlackBerry, iPhone and Windows Mobile (touch screen) Lite Touch operation Channels 4/8/16 models Hard disk capacity max 2TB (320GB included) Contact us for larger ones. Backup Via USB to Flash & optical drives Back-up file formats Embedded player/Convertible to AVI Remote Connect Live View, Live Recording, Search, Set-up, Back-up Compression H.264 hardware codec Recording resolution 360 x 240 : 120/100 (NTSC/PAL) 720 x 240 : 60/50 (NTSC/PAL) 720 x 480 : 30/25 (NTSC/PAL) Pre/Post alarm recording 5 seconds (Pre); 5 minutes (Post), programmable per camera Playback Single, Quad, 8 CH Simultaneous PTZ Control RS-485/RS-422 Interface Inputs 8 x 1.0Vp-p, CVBS, 75ohms, BNC Output 1 composite (BNC), 1 spot output, programmable, 1 VGA Supply voltage 100VAC - 240VAC, 12VDC , 3A, 50/60Hz Power consumption Approx. 19.2 watts (HDD 250GB) Operating Temp. Range -32°~104° F / 0° ~ 40° Monitor, cables, and cameras not included.