... H.264 Standalone DVR 2. Support SATA HardDisk,Mouse,USB*2,network 3. Audio, RS485, IE browse,15 languages 4.HDD,alarm H.264 ... main profile compression algorithm ideal for standalone DVR4 channels Realtime full ... f/s;NTSC 525 line,60 f/sVideo CompressionH.264 main profileVideo RecordingD1 : PAL 1f/s-25f/ ... (highly)Weight2.38KG 4CH Full D1 Real Time H.264 CCTV DVR