• It is based on an Embedded Linux operating system, which supports browsing by the Windows IE explorer and mobile phone.
• It uses H.264 hardware compression technology with high compression ratio and flexible handling
• It supports 4 channels video input, 1 channel BNC video output and 2 channels VGA video output.
• It supports RS-485 interface, which may control PTZ and realize multiple decoding protocol extension.

• Video compression uses H.264 compression algorithm, which may realize independent hardware compression with CIF resolution of 25 frames per second. It supports both variable bit rate and variable frame rate. The coded stream of video image can be set during the process of setting the quality of video image.
• It supports 4 channels audio/video signals. Each channel of audio/video signal is compressed in real time by independent hardware to ensure the stable synchronization of sound and image.
• It supports QCIFCIFD1HD1 resolutions. 

• There are 2 SATA hard disk interfaces and both of them support TB-level hard disk.
• Use flash disk, portable hard drive and other devices to backup through USB port.
• As for client computers, the backup process can be done through downloading the files from the hard disk.
• It adopts the hibernation treatment for the non-working hard disk, which favors the heat dissipation and power consumption reduction, and consequently prolong the HDD service life.
• Files on the hard disk include overlaid loop records and non-loop records.
• The stored data adopt special format to avoid the data tampering and ensure the data security.

• It supports an 10M/100M adaptive Ethernet interface;
• It supports DHCP, DDNS, PPPoE, 3G, FTP, CMS and other network protocols;
• It can set parameters through WEB page, view real-time video and audio signals, and check the running status of the equipment.
• It can control the rotation of PTZ and relevant parameters of camera like aperture size, focal length, etc.
• Remote alarm and system log view
• Video search and real-time playback
• Powerful networking functions with various l inking methods.
• Remote internet access supports multi-screen display.

• Multiplex: each channel can play real-time video independently and realize playback and search of channel 1 and 4 simultaneously.
• Various recording modes: manual mode, alarm and linkage, dynamic detection, and video mask. Al l of them have pre-recording functions.
• Quick searching of video fi les and systematic searching of video types.
• It displays the exact time of incident during playing the video.
• Search the log fi les of hard disk video through network.

• It supports PAL/NTSC video signal input.
• System screen has high definition and exquisite images.
• The channel screen displays the status of channels, such as video, dynamic detection, video loss, video mask, etc.
• Display modes include single screen display, multi-screen display, and multi-channel cycle display.
• The brightness, contrast, saturation, and color of the preview images are adjustable.
• The names of cameras can be added freely on each camera displayed screen.
• It has analog video BNC and VGA output interface, which can realize monitoring functions through monitors or PC monitors.
• It can view the local or remote system logs.

• It supports 4 channels audio input and 1 channel audio output.
• it has the functions of audio and video synchronous input. The sound is very clear and smooth and without any noise.
• It can monitor the image and sound simultaneously. It supports the video camera with audio function.
• Each channel of audio and video can be stored synchronously.
• Audio and video can be played synchronously.

• It has 4 channels wired alarm input and 24 channels wireless input.
• It may connect the infrared or smoke detection alarm detectors as alarm input devices.
• It has the recording function of the alarms and linkage. A detector can be l inked with one or more video camera; while a video camera can be l inked with one or more detectors. As soon as the detectors are triggered, the associated video camera will start recording, and the siren and flashing light will also be started at the same time.
• The alarm input and output interfaces have protective circuits to avoid the damage of main host devices.
• There are 2 alarm CMS telephones and 4 personal alarm telephones.
• It supports PC downloading, IE downloading, and telephone remote control programming.
• Contact Id protocol and MEIAN-Ⅱ bus protocol.
• The built-in electronic clock can realize 4 groups arming and disarming per day.
• It can internally and externally connect alarm sound to make alarm linkage output.
• Automatic learning code pattern recognition of wireless sensor, wireless remote control device
• Automatically monitor the sound on site.
• Give alarms in case of phone disconnection
• Make report in case of AC power failure, and malfunction of wireless or wired sensor. 
• It may set the automatic self-check time and report the status of the main host.

• 1 x 4CH H.264 Network Security CCTV DVR with Alarm Function
• 1 x Power Adapter Control For CCTV DVR
• 1 x Remote Control For CCTV DVR
• 1 x Wireless Receiver For CCTV DVR
• 1 x Mouse For CCTV DVR
• 1 x Telephone Cable
•  1 x User Manual