... surveillance 3.PTZ,USB 4.CE 16CH H.264 HD CCTV DVR all channels support D1 for Security surveillance Project ... ,D1 and CIF can be adjusted, supports 16ch recording, Network transmission, and playback simultaneously 2. Support dual-stream transmission ... 3. Support Multiplex operation: live, record, playback, backup, network transmission, mobile phone surveillance4. Support backup with USB Flash Disk ...