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UN3A-256: 256 Channel NVR

Archived: See Updated NVRs

256 Ch NVR, 640 Mbps, 24 HD Bays, 4K


  • 256 Channel IP Camera Input
  • Up to 12 Megapixel Resolution Recording
  • 640 Mbps Bit Rate Input
  • Four Gigabit Network Interfaces
  • Supports up to 16 channel simultaneous playback
  • Works with ONVIF or other supported IP cameras
  • Local HDMI main monitor output with 4K Support
  • Local VGA main monitor output up to 1080p
  • Multiple video search options including Smart and Sub-Period Search for quick retrieval of footage. 
  • H.264/MJPEG/H.264+ video compression
  • Large Storage Capacity: 24 Hard Drive Bays
  • Free iOS & Android Apps for Smart Phones & Tablets
  • Free Central Management Software (CMS) to manage multiple units & sites from a single platform
  • Free MAC client software to easily manage your system from your Apple computer

                                Model Number 


                                Video Compression 


                                IP Video Input 

                                256 Ch. 640 Mbps max input 

                                Video Output 

                                2 HDMI, 1 VGA 

                                Audio Input/Output 


                                Two-way Audio 


                                Real-time recording resolution 

                                12fps @ Up to 8 Megapixels 

                                HDMI Output Resolution 

                                4K (3840 x 2160, 60Hz) 

                                VGA Output Resolution 

                                1080P, 60Hz 

                                Synchronous Playback 

                                16 Ch. 

                                Network Interface 

                                4 RJ45 10M/100M/1000M 

                                Optic Fiber Interface 

                                4 1000 Mbps optic fiber interfaces 

                                Internal SATA 

                                24 SATA interfaces (up to 14TB each) 

                                Alarm In/out 


                                USB interface 

                                USB2.0, 2/ USB 3.0 

                                Operation Temperature 

                                -10 °C ~ +55 °C 


                                17.4″W x 20.8″D x 6.8″H 

                                Power Suppy 

                                100 ~ 240 VAC, 6.3 A, Max 600W, Redundancy 


                                62 lbs

                                UN3A-256: 256 Ch NVR 

                                Spec Sheet

                                Ultra Products Support Page