It is a HDD video recorder features on the standard H.264 calculation, it supports USB 2.0 backup. It can work continuously and will maintain automatically. You can apply it in supermarket, chainstore, habitation etc to provide monitoring and safety. Mouse control is another special, and nice user experience are available with low consumption. Supports redundancy video; NTP, SMTP, ADP; 2 pcs 2TB hard disk to save video record. PTZ control, partial enlarge the picture via a mouse.