Tekvision&reg; 720P HD CCTV Home Surveillance AHD Bullet Security Camera Outdoor Indoor IR Cut Night Vision Weatherproof & Vandalproof Metal Housing for AHD DVR There are 2 kind of video compress format on DVR and camera the old one is analog 960H the new one is 720P to 1080P analog HD If you have old 960H DVR system but try to upgrade and purchased newer 720 or 1080P camera the old system will not show image But if you have a new 720P to 1080P DVR it will backward compatible with your old camera no problem 30 IR LEDs for up to 80ft IR Night Vision IP66 Weatheproof camera High Resolution 720P AHD Security camera ONLY for 720P AHD DVR. Weather and vandal resistant housing that can withstand the toughest of outdoor conditions BNC Connector Plugs Into Any DVR VCR TV or Security Monitor One Year Quality Warranty Lifetime Tech Support