... also can support voice intercom function. ModelNVR3804VNVR3808VNVR3816VSystemMain ProcessorHigh performance Dual-core embedded microprocessorOperating SystemEmbedded LINUXSystem ResourcesPentaplex function: live, recording, playback, backup & remote ... QualityCBR, VBR(1~6 level, level 6 is the best)Recording ModeManual, Schedule(Regular(Continuous), MD(Video detection: Motion detection, Camera ...