Swann DVR4-4200 4-Channel, 2-Camera Security System: Keep watch on your home or business at all hours of the day and night with this wired security camera system. Its video-monitoring capabilities capture high-resolution, wide-angle footage on up to 4 channels. Use the free app to connect to your smartphone or tablet for real-time, remote playback, or connect to a wide range of compatible displays for widescreen viewing.