HIKVISION™ 4-channel Digital Recorder. Human and vehicle target classification based on Motion Detection 2.0 deep learning. H.265 Pro+/H.265 Pro/H.265 video compression. HDTVI/AHD/CVI/CVBS/IP video input. Audio over coaxial cable. IP camera inputs up to 5 channels (up to 2MP). Encoding capability up to 1080p at 15 fps. maximum 1200 m for HDTVI signal of 720 p. Dimensions: 260 x 222 x 45mm.