... design 2. 3G/WIFI/HDMI/Cloud Technology 3. NVR/DVR/HVR switch 4. 4ch audio, 4ch alarm Compression algorithm ... you experience easily and conveniently. SDVR combines the functions of DVR/HVR/NVR together, multi-mode input ( support pure ... browser(IE,Chrome,Firefox,Safari). Support all kinds of mobile monitor(iPhone,Windows Mobile,BlackBerry,Symbian, Android) Multiplex operation : Preview, recording, ...