Zmodo 16CH DVR Home Security Surveillance System With 4 Bullet 4 Dome CCD image sensor Day/Night Cameras With 1TB Hard Drive View Video Online with No Service Fees - View your DVR's live or recorded video footage on any PC. Long time recording: Base on the H.264 Compression, maximize the hard drives recording time Network Remote Access: Access live video footage directly from your mobile phone or PC Advanced Motion Detection Recording - This allows you record only when motion is detected. Instant Email Alerts: This system is designed to send an email alert if any motion is detected