Features: 4CH 1080P SDI video input 4CH 1080P realtime display True color GUI, windows style, easy to use Multi-mode recording: manual, continuous, motion, sensor Playback: 4CH simultaneously playback, frame by frame Smart search: timer/motion/sensor, single or multi-channel search Backup: USB, Optional DVDRW(SATA), IE, CMS; support multi-file, file cutting when backup Pentaplex: live, record, playback, backup and remote operation Network protocol: DHCP, DDNS, PPPoE IE/CMS: Dual stream, full function; multi-user online Professional Log, professional authority Compatible with HDMI 1920*1080 output Easy PTZ: control by mouse Cell phone: iPhone, iPad, Android, Blackberry, Symbian, Windows CE/Mobile Complete SDK function, easy to integrate with other applications HD 1080P SDI DVR utilizing the space saving H.264 compression. The 2704XE provides 4 SDI video inputs and 4 RCA audio inputs. Recording resolution is a full 1080p @7.5 frames per second on every channel. The picture quality is far superior to that of standard analog cameras and its high definition image also provides a wider viewing area then analog cameras using the same size lens. The USB port allows video and images to be saved to a USB flash drive. Searching files can be done by time or event. Remote viewing, setup, playback, and backup are all standard on the 2704XE. Download User Manual (4MB) Download Quick Start Guide (532kB) | Specifications: Operating System | Embedded Linux | Compression format | H.264 Main Profile | Video output | CVBS×1, HDMI×1, VGA×1 | Video Input | SDI×4 | HDMI/VGA Resolution | 1080P/1280*1024 /1024*768/ 800*600 | Record Resolution | 1080P(1920×1080) | Display Frame Rate | 100FPS (PAL), 120FPS (NTSC) | Record Frame Rate | 25FPS (PAL), 30FPS (NTSC) | Audio Input | RCA X4 | Audio output | RCA X1 | Alarm Input | NO or NC 4CH | Alarm output: | 1CH | Record Mode | Manual / Sensor /Timer / Motion detection | Backup | USB Disk / Backup Format DAT or AVI | Simplex/Duplex/Triplex | Pentaplex | Network Interface | RJ45 (LAN, INTERNET) | Remote Application | IE, Safari, Chrome, Firefox | Mobile Phone | SuperCam/pro/HD for iPad/iPad2/iPhone/Blackberry/Android | PTZ control | YES | Communication interface | RS485, USB2.0 x 2 (one for backup, another for USB mouse) | Disk info | SATA x 2+DVD-RW x 1 or SATA x 3 | Remote controller | YES | Power Supply | 12V5A | Temperature | 0?-50? | Humidity | 10%-90% | Average Operating Power (Excluding HDD) | =0W | |