This FLIR M3104E1B4 surveillance system includes 4 high-quality 2.1MP dome cameras and a 4-channel DVR with a 1TB HDD for ample storage. The cameras offer up to 80' of night vision and 1080p recording resolution, and the DVR supports both HD and SD analog formats. With adjustable gain control, MPX multi-format technology, and pentaplex operation, this system is a reliable choice for home surveillance. Additionally, it comes with a mobile app for iOS and Android devices for remote monitoring. The FLIR M3104E1B4 system is perfect for keeping an eye on your home or business. With PTZ surveillance technology, you can control the camera's movements remotely, and with up to 4TB of expandable storage capacity, you can save your footage for extended periods of time. The system includes everything you need to get started, including 4 cameras, a 1TB DVR, and all necessary cables and hardware.