... parameter settings, preview, download video data 4/8/16 channel Linux system DVRH.264 double stream, advanced and filtering techniques make streaming ... USBHDD1 SATA ,2000G*12 SATA ,2000G*22 SATA ,2000G*2OthersPower12V/3.3A12V/5A12V/5AConsumptionAbout 10WOperating temperature-10 C -+ 55 CHumidity10% - 90 ... *320*60mm340*320*60mmWeight2.5kg3.6kg3.8kg 4/8/16 channel Linux system DVR