A digital video recorder (DVR) is an electronic device that records video in a digital format to a disk drive, USB flash drive, SD memory card, SSD or other local or networked mass storage device. The term includes set-top boxes with direct to disk recording, portable media players and TV gateways with recording capability, and digital camcorders. Personal computers are often connected to video capture devices and used as DVRs in such cases the application software used to record video is an integral part of the DVR. Many DVRs are classified as consumer electronic devices. Digital Video Recorder 4 Channel Package Includes:- DVR, Mouse & Adapter Consumption: Less than equal to 15 Watts Working Temperature: -10 Degree C - +55 Degree C (14 Degree F - 131 Degree F). Remote connections: 128 Network Protocols: TCP/IP, PPPoE, DHCP, DNS, DDNS, NTP, SADP, SMTP, SNMP, NFS, iSCSI, UPnP, HTTPS Capacity Up to 4TB capacity for each disk Weight: Less than equal to 1.5 Kg Digital Video Recorder 8 Channel Power Supply: DC 12 V Consumption: Less than equal to 20 Watts Working Temperature: -10 Degree C - +55 Degree C (14 Degree F - 131 Degree F) Video Bitrate: 32 Kbps - 6 Mbps Audio Output: 1 - Ch, RCA (Linear, 1K ohms) Audio Bitrate: 64 Kbps Capacity Up to 4TB capacity for each disk USB interface: 2 x USB 2.0 Remote connections: 128 Network Protocols: TCP/IP, PPPoE, DHCP, DNS, DDNS, NTP, SADP, SMTP, SNMP, NFS, iSCSI, UPnP, HTTPS Digital Video Recorder 16 Channel Power Supply DC 12 V Consumption: Less than equal to 20 Watts Working Temperature: -10 Degree C - +55 Degree C (14 Degree F - 131 Degree F) HDMI/VGA Output: 1920 x 1080/60 Hz, 1280 x 1024/60 Hz, 1280 x 720/60 Hz, 1024 x 768/60 Hz; 1 - Ch, resolution: 1920 x 1080 P/60 Hz, 1280 x 1024/60 Hz, 1280 x 720/60 Hz, 1024 x 768/60 Hz Frame rate: 1/16 fps - Real time frame rate Video Bitrate: 32 Kbps - 6 Mbps Capacity Up to 4TB capacity for each disk USB interface: 2 Weight: Less than equal to 2 Kg Digital Video Recorder 32 Channel Features: Audio Recording, Mobile Phone Access, Real-Time Recording Remote Viewing: I phone, Android, CMS software, Internet explorer Record Resolution: 720P 15fps or 960H 30fps Number of Channels: 32 Hard Drive Capacity: 8TB Working Temperature: -10 Degree C - +55 Degree C (14 Degree F - 131 Degree F) HDMI/VGA Output: 1920 x 1080/60 Hz, 1280 x 1024/60 Hz, 1280 x 720/60 Hz, 1024 x 768/60 Hz 1 Ch resolution: 1920 x 1080 P/60 Hz, 1280 x 1024/60 Hz, 1280 x 720/60 Hz, 1024 x 768/60 Hz