VIDEO/AUDIO INPUT Video Compression:H.264 Video Input Interface:BNC (1.0 Vp-p, 75Ω) Audio Compression:G.711u Audio Input Interface:RCA (2.0 Vp-p, 1 kΩ) Two-way Audio:1-ch, RCA (2.0 Vp-p, 1 KΩ) (using audio input) Audio Input:1-ch Analog and HD-TVI video input:4-ch BNC interface (1.0Vp-p, 75 Ω) Supported camera types:720P/25, 720P/30, CVBS VIDEO/AUDIO OUTPUT Recording resolution:Main stream: 720P / WD1 / 4CIF / VGA / CIF ;Sub-stream: 2CIF (non-real-time) / CIF Frame Rate:1/16 fps ~ Real time frame rate Video Bit Rate:32 Kbps ~ 4 Mbps Stream Type:Video/Video&Audio Audio Output:1-ch RCA(Linear, 1kΩ) Audio Bit Rate:64kbps Dual Stream:Support Playback Resolution:720P / VGA / WD1 / 4CIF / CIF / QVGA / QCIF Synchronous Playback:4-ch HDMI/VGA Output:1920 × 1080 / 60 Hz,1280 × 1024 / 60 Hz, 1280 × 720 / 60 Hz, 1024 × 768 / 60 Hz HARD DISK DRIVER Interface Type:1 SATA Interface Capacity:Up to 6 TB capacity for each disk NETWORK MANAGEMENT Remote connections:32 Network protocols:TCP/IP, PPPoE, DHCP, EZVIZ Cloud P2P, DNS, DDNS, NTP, SADP, SMTP, SNMP, NFS, iSCSI, UPnP™, HTTPS EXTERNAL INTERFACE Network Interface:1; 10M / 100M self-adaptive Ethernet interface USB Interface:2 USB 2.0 Interfaces GENERAL Power Supply:12V DC Dimension:200 × 200 × 45mm (7.9 × 7.9 × 1.8 inch) Working Humidity:10% ~ 90% Working temperature:-10 ºC ~+55 ºC (14 ºF ~ 131 ºF) Consumption:≤ 8W Weight(without HDD):≤ 0.8 kg / 1.8 lb(without hard disks) HARD DISK DRIVER Interface Type:1 SATA Interface Capacity:Up to 6 TB capacity for each disk NETWORK MANAGEMENT Remote connections:32 Network protocols:TCP/IP, PPPoE, DHCP, EZVIZ Cloud P2P, DNS, DDNS, NTP, SADP, SMTP, SNMP, NFS, iSCSI, UPnP™, HTTPS EXTERNAL INTERFACE Network Interface:1; 10M / 100M self-adaptive Ethernet interface USB Interface:2 USB 2.0 Interfaces