Additional Details ------------------------------ Product description: Know that your property is protected while you're there and while you're away thanks to this Nocturnal security camera system from Lorex. This system includes eight security cameras and a powerful 16-channel Network Video Recorder (NVR). Along with 4K recording resolution, Color Night Vision, listen-in audio and Smart Motion Detection, these dome security cameras include motorized zoom lenses that allows you to adjust the camera's field of view to suit your monitoring needs. These features make this system an incredibly versatile security solution perfect for a large home, small business, office, or commercial facility. Don't miss a moment with our Real-Time 4K Nocturnal Security Cameras. With 30 frames recorded within each second, the on-screen movement will look like you are witnessing events in real life. Add another layer of security coverage with our Nocturnal audio security cameras. Adding audio can add valuable information (such as voices) to your security system