... 320x240/640x480 (NTSC), 352x288/704x576(PAL) standard resolutions>Image color adjustable for each channel, including contrast, lightness, hue and ... advanced search mode. Users can search by date/time, camera, record mode, and random combination of the three methods> ... Support recorded files backup, delete by date/time, camera>Convenient to extend system functions by software upgrade>CPU and ...