1. 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 ... / network alarm center functions, support WEB client, standalone client and SDKWith the sound system for the protection circuit, unique triple watchdog function ... (width) * 330MM (length) * 58MM (highly)Weight2.38KG 4CH Full D1 Real Time H.264 CCTV DVR