Additional Details ------------------------------ Product description: Professionally protect your property day and night with this 16-channel NVR System featuring Nocturnal IP Security Cameras. Along with real-time 30fps 4K recording, Motorized Varifocal Zoom Lenses, Color Night Vision, and Smart Motion Detection. These security features will add a whole new dimension to your monitoring. These features also make this system an incredibly versatile security solution perfect for a large home, small business, office, or commercial facility. *When Smart Motion Detection is enabled, the camera's recording frame rate is reduced from 30 frames per second to 20 frames per second.