主要特点：
1. 4CH HDD DVR，带双SD卡，安全存储
2.可选内置3G / Wi-Fi
独特的设计，具有振动和散热
4.视频分辨率D1 / HD1 / CIF可选
5.支持遥控器和鼠标（USB 2.0，USB 1.1）
6.网络协议：tcp / ip，ftp，smtp，rtp，dhcp，ddns
7.支持RS485倾斜控制
8. 4个触发器和Linux系统
9.警告：支持7CH高电平报警输入，兼容4CH干触点报警输入
10. 4CH高电平报警输出
h264 dvr

Main features:
1. 4CH HDD DVR with dual SD card for safe storing
2. Optional built-in 3G/Wi-Fi
3. Unique design with an-vibration and heat dispersion
4. Video resolution D1/HD1/CIF optional
5. Supports remote control and mouse (USB 2.0, USB 1.1)
6. Networking protocol: TCP/IP, FTP, SMTP, RTP, DHCP, DDNS
7. Supports RS485 tilt control
8. 4 triggers and Linux system
9. Warning: supports 7CH high level alarm input, compatible 4CH dry contact alarm input
10. 4CH high level alarm output
11. H264 DVR