real time recording on all 4 channels,8 channels,16 channels. 1080P*4CH HD-SDI 4CH DVR CE, UL listed

HD-3104D	Video Input/Output: BNC 4CH In / 1CH Out, VGA 1CH Out, HDMI 1CH Out
	Audio Input/Output: RCA 4CH In/ 1CH Out
	Alarm Input/Output: Alarm 4CH In/ 1CH Out
	Compression Method: H.264
	Real time recording support:                                                                   1920x1080 with 120 Fps (NTSC); 1920x1080 with 100 Fps (PAL)
	Preview resolution: 1920x1080( NTSC ), 1920x1080 ( PAL );                                             Playback resolution: 4x1080P
	Hexaplex operation simultaneously: Preview, recording, playback, and network live, backup, playback
	1 RJ-45 Ethernet connector, Static, Dynamic IP and DDNS, Support Internet Explorer and special client software
	Remote Control, PTZ, RS422, 2×USB, 1×IR Controller
	2 SATA Hard Disk interface
	Backup: USB2.0 and Network
	Support remote view by Mobilephone
	Dimensions (L×W×H): 405mm×325mm×65mm, weight: 6.0kg

1080P*4CH, RS422, PTZ, Alarm, Network,

2 SATA HD, HDMI, VGA, USB Backup, USB Mouse

HD DVR FULL D1