Dahua HDCVI X Plus: WizColor, Two-Way Talk and AI Search Over Coax

HDCVI X Plus, launched by Dahua in June 2025, brings five technologies to its over-coax CCTV range: WizColor night colour, PT MultiVision pan-tilt cameras, two-way talk, Enhanced Encoding and AcuPick AI search on the XVR recorder. It's the latest step in a run of HDCVI upgrades going back to Real 5MP in 2021. If you run analogue-style coax CCTV, or want to upgrade without re-cabling, here's what has changed and why it matters.

What is HDCVI?

HDCVI is Dahua's high-definition over-coax technology. It sends audio, video, data and power down a single coax cable, and Dahua quotes runs of up to 1,200m. That makes it a cost-effective way to upgrade an old analogue system to HD or 4K using existing cabling. Dahua's Penta-brid XVR recorders accept HDCVI, other analogue HD formats and IP cameras. Our HDCVI guide and Penta-brid recorder guide explain the basics.

How HDCVI has developed

• 2021, Real 5MP and Cooper-I: a 16:9 5MP camera at 25fps that fills a widescreen monitor without stretching, plus entry-level Cooper-I XVRs with SMD Plus (human and vehicle filtering) and AI Coding, which Dahua says saves over 50% bandwidth and storage.
• 2022, XVR-I3: perimeter protection on up to four channels (up from one), Scheduled AI that switches detection modes by time of day, and support for TiOC 2.0 deterrence cameras and Smart Dual Light cameras.
• 2023, Real 5MP 2.0 and S-XVR: 5MP Pro and Value options, Smart Dual Light with lighting schedules, a compact PT camera, and an S-XVR with pre-installed SSD storage. Dahua says the S-XVR costs up to 15% less than an HDD set-up and saves at least 38kWh a year.

The five technologies in HDCVI X Plus

• WizColor: colour night images from AI-ISP, a large-pixel sensor and a large-aperture lens, with lens distortion correction. See our WizColor guide.
• PT MultiVision: pan-tilt models in four styles. Owl Eyes has 6x hybrid zoom, Twin Eyes watches two zones, Link Eyes links a fixed and a moving view, and Pano Eyes stitches two lenses into one panorama with tracking through the XVR.
• Two-way Talk: talk through the camera from the DMSS app at up to 8m, with echo cancellation, AI noise reduction and automatic gain.
• Enhanced Encoding: reduces blur and ghosting in playback across the 4K, 5MP Pro, 5MP Value and 1080p series.
• AcuPick: AI search on the XVR. Pick a person or vehicle during live view or playback, and the recorder finds where else they appear, or search by area.

Who benefits

• Sites with existing coax that want HD, 4K or colour night vision without re-cabling.
• Shops and small businesses wanting two-way talk and active deterrence on a budget.
• Installers mixing coax and IP cameras on one Penta-brid recorder.

HDCVI cameras and XVRs we stock

• DH-XVR5104HS-4KL-I3 4-channel 4K WizSense XVR
• DHI-XVR5108HS-4KL-X 8-channel 4K XVR and DH-XVR5216AN-4KL-X 16-channel 4K XVR
• DH-HAC-HDW1549XMP-IL-A-PRO 5MP WizColor HDCVI turret
• DH-HAC-HDW1509TP-IL-A-S2 5MP HDCVI turret and its PoC version, powered down the coax

Add surveillance hard drives sized with our storage calculator, or browse the full Dahua range.

Our take

Coax CCTV isn't standing still. HDCVI X Plus puts features usually associated with IP systems, such as AI search, colour night vision and two-way audio, onto cable that's already in the wall. For many upgrades that makes HDCVI the quicker, cheaper route, with IP cameras added on the same Penta-brid XVR where needed.

Upgrading an old analogue system? Call 01902 902251. We ship nationally to England, Scotland and Wales.

Quick questions

What is HDCVI X Plus?
Dahua's 2025 HDCVI generation, adding WizColor, PT MultiVision, two-way talk, Enhanced Encoding and AcuPick search.

Can I reuse my old coax cable?
Usually, yes. That's the main advantage of HDCVI. Check the cable's condition and run lengths first.

What is AcuPick?
Dahua's AI search. You pick a person or vehicle and the recorder finds matching footage, instead of you scrolling through hours of video.

Can an XVR record IP cameras too?
Penta-brid XVRs accept HDCVI, other analogue HD formats and a number of IP cameras. Check the channel limits on each model.

Sources: Dahua MENA press releases, 5 January 2021, 2 February 2021, 18 April 2022, 18 July 2023 and 6 June 2025. Figures are Dahua's own.