Video/ Audio Input
Video Compression	H.264+
Video Input	4ch/ BNC (1.0 Vp-p, 75Ω), PAL / NTSC Self-adaptive
IP Input	1ch (Support ONVIF, up to 2MP resolution)
Audio Compression	G.711u
Audio Input	1-ch, RCA (2.0 V-p, 1kΩ)
Two-Way Audio Input	1-ch, RCA (2.0 V-p, 1kΩ)
Video/ Audio Output
HDMI/ VGA Output	1920x1080
CVBS Output	1-ch, BNC (1.0 V-P, 1kΩ)
Frame Rate	Main Stream: 1/16 fps to real time frame rate/ Sub Stream: WD1/ 4CIF@12fps, CIF/QVGA/QCIF @real time frame rate
Video Bit Rate	32 Kbps - 6Mbps
Audio Output	1-ch, RCA (Linear, 1 kΩ)
Audio Bit Rate	64 Kbps
Dual-Stream	Support
Stream Type	Video, Video & Audio
Synchronous Playback	4ch
Network
Remote Connections	128
Network Protocols	TCP/IP, PPPoE, DHCP, DNS, DDNS, NTP, SADP, SMTP, SNMP, NFS, iS CSI, UPnP™, HTTPS
Hard Disk
SATA	1 SATA
Capacity	Up to 6TB capacity for each disk
External Interface
Network Interface	1:10M/ 100M self-adaptive Ethernet interface
Serial Interface	RS-485
USB Port	2 X USB2.0
Alarm In/ Out	-
General
Power Supply	DC 12V
Consumption	≤15W
Working Temperature	-10°C ~ + 55°C (14°F - 131°F)
Working Humidity	10% ~ 90%
Chassis	Compact 1U Chassis
Dimesnsions	315 X 242 X 45mm (12.94 X 9.5 X 1.8 inch)
Weight	≤2Kg (4.4lb)

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【LTS】 LTD8304T-ET, Platinum Advanced Level HD-TVI 4 Channel DVR, 1U, SATA up to 6TB, No Pre-Installed Storage