This is a wired system, not wireless. Comes with NO Hard Drive. (can view, but not record). ZOSI CCTV system have multiple recording modes. Set motion detection, sechedule or 24/7 recording for each camera respectively to meet your needs. Security camera System detects movement and send you instant alerts in forms of emails, App push notifications and buzzer alarms in the DVR. Select date and time on the timeline or search for motion events or images based on your needs. You can playback footage at different speed, and save the video clips locally or share it to others. This upgraded 8 channel 4-in-1 DVR supports up to 8 HD-TVI/CVI/AHD/CVBS security cameras. 265+ technology saves about 50% bandwidth and storage compared with H. 265+ help deliver sharper and smoother video. Upgraded 5MP Lite DVR. Upgraded 5MP Lite DVR can work with 2MP and 5MP 12.5fps HD-TVI, CVI, AHD cameras. It supports up to 5MP video input, allowing clearer and sharper viewing experience.