CPD502ZAD, 4CH MPEG4 real time Digital Video Recorder. It includes features such as MPEG4 compression format, superior real time performance with 120 IPS (NTSC) / 100 IPS (PAL), file backup via DVD writer, USB backup function, advance motion trigger recording, and pentaplex functions. All the benefits of this product are created to secure your life every time and everywhere. Back Panel