Features:4 channel video recorder - Real-time synchronous recording of channels, multi-channel real-time playback and multi-channel multi-user network operation.USB backup for video playback and evidence storage.HD display, support 1920 * 1080/1280 * 720/1440 * 900/1280 * 1024/1024 * 768/800 * 600.16bit true color GUI interface, and it supports mouse operation for easy and visual operation.Motion detection - 192 (16 * 12) detection area per channel.Easy to install and use. Specification:Type: 4CH 5-in-1 Real-time Video RecorderOperating system: embedded for LINUX operating systemSystem resources: multi-channel real-time synchronous recording, multi-channel real-time playback, multi-channel multi-user network operation, USB backup.Operation interface: 16bit true color GUI interface supports mouse operationDisplay: 1/4 screen (take analog channel as an example, others based on selected channel mode)Video standard: PAL / NTSC (1080P)Image coding: H.264 (High Profile); JPEGDisplay quality monitor: D1; VGA, HDMI: High definition (supports 1920 * 1080 / 1280 * 720/1440 * 900/1280 * 1024 / 1024 * 768 / 800 * 600)Playback quality: 1080P / 720P / D1 / HD1 / CIFCoding ability: 4 * 1080N (12FPS)Decoding ability: 4 * 1080N (12FPS)Multimode video input AHD: 4 * 1080NH (25FPS) / 4 * 720PAHDM (25fps) / 4 * 960HHVR: 2 * 720P (AHD) + 2 * 720P (IP)NVR: 8 * 1080P / 16 * 960P / 8 * 720PMotion detection: 192 (16 * 12) detection area per channel; multi-level flexibility can be set (only for local analog channels)Audio compression: G711ATwo-way conversation: supportRecord mode: Manual > Alarm > Motion Detection > TimingLocal playback: 1-4ch synchronous playback (take local analog input as an example, others depend on the selected channel mode) (support 4CH to play together)Video search: time / date / event / channel searchOccupy video: CIF 4~5G / day * channel, D1 16~20G / day * channel;Audio: 691.2M / day * channelVideo storage: local hard drive / networkBackup mode: network backup / USB portable HDD / USB imprint / SATA imprintVideo input: 4CH BNC (1.0Vp-p, 75)Video output: 1CH VGA, CH HDMIAudio input: 1CH RCAAudio output: 1CH RCA (200-3000mV, 5K)Alarm input: N / A.Alarm output: N / A.Network port: RJ45 10M/100M adaptive Ethernet portPTZ control: NoUSB port: 2 * USB2.0HDD port: 1 SATA port (maximum 8TB each) (must be 3.5CH HDD)If your hard drive is not 3.5CH, please don't use it with our project!Wireless port: 3G, WIFI is not supportedPower: 12V/2A (If you use more than 2tb hard drive, please replace 12V4A or more by yourself)Consumption: <15W (excluding hard disk)Temperature: -20-55Humidity: 10%-90%Air pressure: 86kpa-106kpaOnvif: Not supportedPackage list:1 * Video Recorder1 * Mouse1 * Instruction Manual1 * Power Adapter Note:1. Please note that this recorder does NOT support all the monitors.2. If the DVR can be turned on, but your monitor cannot display images, first know to replace the VGA or HDMI cable, then change a new monitor to check again. Don't work with some old monitors and some TVs.3. If your hard drive is not 3.5CH, please don't use it with our recorder.4. About the hard drive: A secure DVR must be used with a secure hard drive, and most will not work properly if you use a PC hard drive.5. Please allow slight error due to manual measurement.6. Different monitor colors may be different. Thanks for your kind understanding.