LINOVISION 16 channels POE IP Security System consists of 16-channel 4K POE NVR with 4TB pre-installed hard drive, 8 units of outdoor 4K POE vandal-proof dome IP cameras with built-in microphone, network cables and other accessories. It features with 4K stunning clarity displaying, plug-n-play ease of use, free mobile App and without cloud subscription service. This high-performance system can be widely used in both home security system and commercial surveillance system, for indoor or outdoor applications requires 24 hours day/night reliable recording.