B01ERLM8MU GW Security 8 Channel 4K H.265 CCTV DVR Security Camera System with (4) x UHD 8MP 2.8-12mm Varifocal Zoom 4K AI Human Detection Bullet Cameras and 2TB HDD, Free Phone App/Computer Remote View

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Ultra High Definition 4K Video – UltraHD 4K (8MP) is a 400% increase over standard 2MP(1080P) resolution. Record everything with sharper details with the high Pixel count (3840 x 2160) and be able to digitally zoom into far away objects without losing any quality.
4K UHD Smart Home/Business Surveillance Kit – 8 Megapixel (4K) High Definition 8 Channel 5-IN-1 (HD-TVI/CVI/AHD/CVB/IP) 4K DVR Security Camera System with (4) 8MP 2160P 2.8-12mm Varifocal Lens H.265 Outdoor/Indoor Cameras
2.8-12mm Varifocal Zoom Lens – Built in 2.8~12mm Manual Zoom Varifocal 8.0 Megapixel HD lens which allow you to adjust the angle of View from 20-120 degree, view up to 180ft IR Distance with 36-Super IR LED
Expandable System, 24/7 Reliable Recording, Free Remote Access – Secure your home and business 24/7 with smart motion-triggered alerts. Easy live view & remote playback with free App on your smartphones (iPhone & Android) and computers from anywhere anytime. 2TB surveillance grade hard drive pre-installed, record 30+ days under smart motion detection. The DVR support up to 8 cctv cameras & 4 ip cameras and up to 20TB hard drive at most, you can add more cameras and expand storage.