SPRO 8 Channel 4K Ultra HD Analogue CCTV DVR with Power Over Coax


Sale price£295.00
In stock

Questions? Call our team on 02392 006118 or email sales@tech4.co.uk


The SPRO B4 is a high quality CCTV DVR for viewing, recording and monitoring your CCTV cameras.

With the Power Over Coax feature you can simply plug & play compatible POC cameras without requiring any further power supplies.

Perfect for home security with a whole host of useful features to protect your property and family.

It's also perfect for upgrading older systems to high definition and remote viewing.


  • Record With Up To 4K 8MP Quality
  • Free EasyViewer App for iOS & Android
  • Easy To Setup - Plug & Play Cameras
  • Power Over Coax - No Additional PSU's Required
  • Connect 8 x Analogue Cameras & 4 IP Network Cameras (via network)
  • View 1/4/8/9 or 16 Channels At One Time With Live Display
  • P2P Remote Viewing - No Port Forwarding Required, Just Scan The Code
  • Audio Output
  • Face Detection
  • Trip Wire Detection
  • Push Notifications
  • Supports Up To 8MP On Additional IP Channels
  • PTZ Control Over Coax*
  • Alarm Over Coax*
  • Audio Over Coax*
  • 4K HDMI & VGA Outputs For Connecting To Monitor or TV
  • 3 Year Warranty

    * Compatible POC Cameras Required

    ** Note that this DVR cannot power POC cameras via baluns (i.e with CAT5) must be coax cable.

    DVR Recorder:

    • Model Number:  DHDVR06-B6
    • Main Processor: Embedded processor
    • Operating System: Embedded LINUX

    Perimeter Protection 

    • Performance: 2 channels, 10 IVS for each channel
    • Object classification: Human/Vehicle secondary recognition for tripwire and intrusion
    • AI Search: Search by target classification (Human, Vehicle)

    Face Recognition

    • Performance Max: 12 face pictures/sec processing - 2 channels video stream face recognition, only support analogue camera
    • Stranger Mode: Detect strangers' faces (not in device's face database). Similarity threshold can be set manually.
    • AI Search: Up to 8 target face images search at same time, similarity threshold can be set for each target face image.
    • Database Management: Up to 10 face databases with 20,000 face images in total. Name, gender, birthday, address, certificate type, cerificate No., countries and state can be added to each face picture.
    • Database Application: Each database can be applied to video channels independently.
    • Trigger Events: Buzzer, Voice Prompts, Email, Snapshot, Recording, Alarm Out, PTZ Activation, etc.

    SMD Plus

    • Performance: 8 channels
    • AI Search: Search by target classification (Human, Vehicle)

    Video & Audio

    • Analog Camera Input: 8 channels, BNC
    • HDCVI Camera Input: 4K, 6MP, 5MP, 4MP, 1080P@25/30fps, 720P@50/60fps, 720P@25/30fps
    • AHD Camera Input: 4K, 5MP, 4MP, 3MP, 1080P@25/30, 720P@25/30fps
    • TVI Camera Input: 4K, 5MP, 4MP, 3MP, 1080P@25/30, 720P@25/30fps
    • CVBS Camera Input: PAL/NTSC
    • IP Camera Input: 8+8 channels, each channel up to 8MP
    • Audio In/Out: P1/1, RCA
    • Two-way Talk: Reuse audio in/out, RCA


    • Compression: AI Coding/H.265+/H.265/H.264+/H.264
    • Resolution: 4K, 6MP, 5MP, 4K-N, 4MP, 3MP, 4M-N, 1080P, 720P, 960H, D1, CIF
    • Record Rate - Main Stream: 4K(7fps), 6MP(10fps), 5MP(12fps),4MP/3MP(15fps),4M-N/ 1080P/ 720P/ 960H/ D1/ CIF/ QCIF (25fps)
    • Record Rate - Sub Stream: 960H (1~15fps), D1/ CIF/ QCIF (1~25fps)
    • Bit Rate: 32Kbps~6144Kbps Per Channel
    • Record Mode: Manual, Schedule (General, Continuous), MD (Video detection: Motion Detection, Video Loss, Tampering), Alarm, Stop
    • Record Interval: 1~60 min (default: 60 min), Pre-record: 1~30 sec, Post-record: 10~300 sec
    • Audio Compression: G.711A, G.711U, PCM
    • Audio Sample Rate: 8KHz, 16 bit Per Channel
    • Audio Bit Rate: 64Kbps Per Channel


    • Interface: 1 HDMI, 1 VGA
    • Resolution: HDMI 3840×2160, 2560×1440, 1920×1080, 1280×1024, 1280×720
    • Resolution: VGA 1920×1080, 1280×1024, 1280×720
    • Multi-screen Display: When IP extension mode not enabled: 1/4/8/9 When IP extension mode enabled: 1/4/8/9/16
    • OSD Camera: title, Time, Video loss, Camera lock, Motion detection, Recording


    • Ethernet: 1 RJ-45 Port (1000 MB)
      Network Functions HTTP, HTTPS, TCP/IP, IPv4/IPv6, Wi-Fi, 3G/4G, SNMP, UPnP, RTSP, UDP, SMTP, NTP, DHCP, DNS, IP Filter, PPPoE,DDNS, FTP, Alarm Server, P2P,IP Search (Supports Dahua IP camera, DVR, NVS, etc.)
    • Max User Access: 128 users
    • Smart Phone: iPhone, iPad, Android Phone
    • Interoperability: ONVIF 16.12, CGI Conformant

    Video Detection & Alarm

    • Trigger Events: Recording, PTZ, Tour, Video Push, Email, FTP, Snapshot, Buzzer and Screen Tips
    • Video Detection: Motion Detection, MD Zones: 396 (22 × 18), Video Loss, Tampering and Diagnosis
    • Alarm input: N/A
    • Relay Output: N/A

    Playback & Backup 

    • Playback: 1/4/9
    • Search Mode: Time/Date, MD & Exact search (accurate to second)
    • Playback Functions: Play, Pause, Stop, Rewind, Fast play, Slow play, Next file, Previous file, Next camera, Previous camera, Full screen, Repeat, Shuffle,
    • Backup: selection, Digital zoom
    • Backup Mode: USB Device/Network


    • Internal: HDD 1 SATA port, up to 10TB

    Auxiliary Interface

    • USB Interface: 2 USB Ports (1 USB 2.0 , 1 USB 3.0)
    • RS485: 1 port, For PTZ Control
    • RS232: N/A


    • Power Supply: DC12V/2A
    • Power Consumption: <10W (without HDD)
    • Dimensions Compact: 1U, 260mm × 238mm × 48mm
    • Net Weight: 1.0KG(without HDD)
    • Gross Weight: 1.4KG(without HDD)
    • Operating Environment: -10°C ~+55°C / 0%~90%RH
    • Storage Conditions: -20°C ~+70°C / 0%~90%RH
    • 1 x DHDVR12-B6
    • 1 x User Manual
    • 1 x Power Supply

    All of the items on our website are shipped from our UK warehouse, based on the South Coast near Portsmouth.

    We use the top couriers including DPD & Parcelforce in order to get your product to you ASAP. 


    Standard Delivery - Orders Over £99
    Usually Delivered Within 2-3 Working Days
    Standard Delivery - Orders Under £99
    Usually Delivered Within 2-3 Working Days
    Next Day Delivery (Order By 2PM)
    Usually Delivered Next Working Day

     All orders are sent on a tracked & signed for service.


    Unfortunately we are currently only shipping to mainland UK and are currently not shipping to Ireland.


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