... , Backup, Remote access, PTZ control, Mobile monitoringControl ModeUSB mouse, IR remote, Keyboard, NetworkVideoInput4×BNC,(1.0Vp-p,75 ... , file restorationAuxiliary InterfaceUSBTwo USB2.0 interface, for connecting mouse, U-disk, USB hard diskRS485PTZ controlEnvironmentPower supply12V/4AWorking ... , Symbian, Android, iPhone and Blackberry etc 4CH realtime standalone dvr with alarm and network function