Speco D16RS3TB has a 16 Channel H.264 DVR and has a storage capacity from 500GB to 4TB. Features: H.264 video compression Networkable DVR with free DDNS server Easy and simple graphical user interfaceDigital Deterrent® supports up to 8 audio files for triggeringduring sensor or motion detection 2-way audio communication Programmable recording on motion detection, sensor, schedule, continuous and manual Built-in S.M.A.R.T. Technology(Self-Monitoring, Analysis and Reporting, Technology for HDD) 4 channel audio recording Covert camera operation provides enhanced security and administrator control Password to secure installation authorization Easy firmware upgrade by USB port or network Instant and convenient backup via USB flash drive or network Supports multiple PC based browsers such as Internet Explorer, Google Chrome, Firefox and Safari Simultaneous playback/record while continuing to network transferor backup User Access: up to 4 concurrent users Remote monitoring / recording / playback / configuration / software upgrades and PTZ control via internet Network accessible via SpecoTech Multi-Client Software, Internet Explorer, Web-Viewer and Speco Player Mobile Viewer PC and MAC® compatible Digital watermarking

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