Features: Technology: LEGEND TURBO HD ver. 3.0 Number of channels: 4 ch. Analog 1 ch. IP. Support technologies: HD-TVI, Analog, AHD and IP. Remote Access: PC (WINDOWS / MAC) Smart Phone (iPhone, iPad, Android). Compatibility with Chrome, Firefox, Safari, IE browser. Software supports multi client site up to 64 channels (IVMS4200). Compatible with multi site mobile client software (IVMS4500). Compression and resolution:​ H.264+, H.264 Maximum resolution: HD-TVI: 720p. ANALOG: 1200TVL. AHD: 720P. IP: 1080P (1 canal) Frame Rate: 720P, WD1, 4CIF, VGA, 2CIF, CIF@30IPS Video Bit Rate: 32 Kbps - 4 Mbps. Audio: G.711u Audio Bit Rate: 64Kbps. Recording and display functions: Multi area motion detection digital zoom display and recording It supports multiple recording types, including real time, manual recording, video sensor. Smart Search recordings by motion detection. SDK code is provided to application development. Network Features: Protocols: TCP/IP, PPPoE, DHCP, DNS, DDNS, NTP, SADP, SMTP, SNMP, NFS, iSCSI, UPnP, HTTP, HTTPS. DDNS support: ezViz CLOUD P2P, IP SERVER, DynDNS, PeanutHull, NO-IP, HIDDNS. Remote firmware upgrade. Double supports streaming. IN / OUT Interface: Video Input: 4 channels (BNC, 1.0Vp-p, 75Ω) Video Output: HDMI / VGA: ​1920×1080, 1280×1024, 1280×720, 1024×768. Audio Input: 1 channel (RCA, 2.0 Vp-p, 1KΩ). Audio Output: 1 channel (RCA, 2.0 Vp-p, 1KΩ). USB Interface: 2 port (2.0). Network Interface: 1 port (RJ-45 10/100 Mbps). SATA interface: 1 HDDs / up to 6TB per disk. Power Supply: 12VCD (3.5m plug connector) Physical and Electrical Features: Operating Temperature: 14 ~ 131 ° F. Power Supply: 12VDC. Power Comsumption: 8W. Dimensions: 7.9 × 7.9 ×1.8 inch Weight: 1.8lbs (without hard drives).