Know that your property is protected while you're there and while you're away thanks to this security camera system from Lorex. This system includes Nocturnal security cameras and a powerful sixteen channel Network Video Recorder (NVR). Along with 4K recording resolution, Color Night Vision, and Smart Motion Detection, these dome security cameras include listen-in audio, which adds a whole new dimension to your overall security monitoring. These features make this system an incredibly versatile and expandable security solution perfect for a large home, small business, office, or commercial facility.