... s , DC12V 2A , Accessories:Power Adapter,CD-ROM,User Manual,Garantee Card, Bracket,etc CatalogueTypeParametersFeaturesView by phoneSupport monitoring via ... 4,9,16,25,36, 64,81-channel , no user limited , centralized monitor, remote record and playback , ... systemEmbedded Linux OSSystem securitySupports three-level account, password, user multi-level authority managementDDNSProvide DDNS for free ,like ...