1. 4CH digital video recorder network DVR 2. Support a 2TB HDD, with VGA 3. RS485, mouse, USB, 4CH Digital ... , Iphone, android , BlackBerry, mobile phone live view via 3G netSupport a 2TB HDD, with 2 USB2.0 slot, support USB, mouse ... Humidity10%--90%Atmosphere Pressure86kpa--106kpaDimension310mm x 220mm x 45mm(W*D*H)Weight3.5kg 4CH Digital Video Recorder Real-time Recording ...