Amcrest ProHD 1080P 8CH Video Security DVR Digital Recorder, 8-Channel 1080P @ 30fps, HD Analog, Hard Drive & Cameras NOT Included, Remote Smartphone Access (AMDV10808) Uncompressed, latency free, point-to-point raw data HD megapixel video transmission up to 1920 x 1080p @30fps. Auto Signal Compensation (ASC) technology provides reliable long distance signal transmission up to 500m (1640ft) at 1080P. Web browser viewing as well as Plug and Play mobile viewing via QR code scan compatible with iPhone, iPad, and Android devices. Transmits video, audio, and controls over a single coaxial cable. Utilizes existing coaxial cable networks, reducing the need to run new cables. Cameras, Camera Power Supplies and Camera Video Cables are NOT INCLUDED and are SOLD SEPARATELY.