This Zmodo KHA4-CARQA22N 4CH 4CAM 960H DVR Security System has been equipped with completely new features. Innovative QR-Code scan connectivity allows you to quickly and easily connect to your smartphone, tablet, or PC. The DVR offers 960H (960x480) real-time recording on all 4 channels at 30fps. Coupled with 600TVL high-resolution cameras, this system produces the clearer Analog surveillance image with more accurate color, all while maintaining image integrity.