Dahua 8MP DH-IPC-HDW2831TP-ZS-27135-S2 (4K) Starlight IP Turret Motorised [Optical Zoom], WDR, IR 40m, IP67, POE

Model: DH-IPC-HDW2831TP-ZS-27135-S2

Who This Is For

For installers and property owners who need 4K resolution in a compact turret housing but want the flexibility to dial in the exact field of view after the camera is mounted. The DH-IPC-HDW2831TP-ZS-27135-S2 covers a motorised zoom range of 2.7 mm to 13.5 mm, meaning a single camera can be configured as a wide-angle entryway camera or a tighter approach camera without swapping hardware. Starlight technology at 0.008 lux brings colour detail into low-light environments where standard cameras fall back to monochrome IR. The IP67-rated housing handles rain and dust, making it equally suitable for eave, soffit, or wall mounting across residential, small commercial, and light industrial sites. If you are comparing fixed turrets and want post-installation zoom adjustability without the cost of a full PTZ, this model sits squarely in that gap.

What This Camera Actually Does

Who Buys This Model

• Small business owners fitting a front car park: The motorised zoom means one camera can be set wide to cover multiple bays or tightened onto a single entry lane, without purchasing separate fixed focal cameras for each scenario.
• Residential installers working on acreage or larger properties: The 40 m IR range and telephoto end of the lens (13.5 mm, 31-degree horizontal FOV) cover long driveway approaches that a standard wide-angle turret cannot reach usefully.
• Security integrators specifying eave or soffit positions: The turret housing sits flush against the mounting surface with a low profile, reducing wind loading and keeping the installation tidy - preferred over bullet cameras where aesthetics matter.
• Strata and facility managers upgrading to 4K on a mixed NVR system: PoE and 12V DC dual-power support, plus Dahua NVR compatibility, makes this a straightforward drop-in upgrade from older lower-resolution turrets without rewiring.

Honest Assessment

The DH-IPC-HDW2831TP-ZS-27135-S2 earns its place where flexibility at installation time is worth more than the slightly higher cost over a fixed-lens turret. The motorised zoom genuinely solves the problem of committing to a focal length before you know exactly how a space will look once live. Starlight performance at 0.008 lux is a measurable advantage in low ambient-light conditions, and 4K resolution at 25/30 fps in the 2688 x 1520 stream gives good detail for most identification tasks. Smart H.265 keeps storage demands manageable on a standard NVR. What this camera will not do is provide colour night vision in complete darkness - it carries IR LEDs only, not the full-colour LED array found in TiOC or full-colour models. It also lacks audio hardware, so two-way communication or audio detection is not available. For sites where active deterrence or built-in audio alerts are required, a different product type supplied by Security Australia would be the better direction.

Before You Buy

Quick Fit Check

• Good match if: You are mounting to an eave or soffit where the final field of view cannot be fully confirmed until after installation - the motorised 2.7-13.5 mm zoom allows post-mount adjustment through the NVR without physically accessing the camera again.
• Good match if: The site has periods of low ambient light and you want colour imaging to hold as long as possible before switching to IR - Starlight at 0.008 lux extends colour capture well beyond what a standard sensor manages in similar conditions.
• You may need a different model if: The site requires full-colour night vision in complete darkness without any IR switching - a full-colour or TiOC turret with white-light LED illuminators would be a more appropriate product type for that requirement.

Key Features & Technical Specifications

Real-World Scenarios

How It Compares

• Choose this if: You need 4K resolution with a motorised zoom turret housing and want Starlight low-light performance without committing to a fixed focal length at installation time.
• You may need a different model if: The site requires full-colour night imaging in zero-light conditions - a full-colour or TiOC turret with built-in white-light LEDs is a more appropriate product type and will retain colour throughout the night without IR switching.
• Pairs well with: A Dahua PoE NVR with Smart H.265 decoding support and remote zoom/focus control capability for this camera series.

Common Questions

1. Does this camera work on a standard PoE switch or NVR PoE port?

   Yes. The DH-IPC-HDW2831TP-ZS-27135-S2 supports IEEE 802.3af PoE, which is the standard 15.4W specification delivered by most PoE NVR ports and unmanaged PoE switches. A single Cat5e or Cat6 cable carries both power and data to the camera. It also accepts 12V DC if you prefer a separate power supply run.

2. Will this camera keep recording if the network goes down?

   Yes, provided a MicroSD card is installed. The camera supports local MicroSD recording up to 256 GB, which operates independently of the NVR or network connection. This is useful as a fallback for network interruptions or if the NVR storage fills unexpectedly.

3. How do I adjust the zoom on this camera after it is mounted?

   The zoom is adjusted electronically, not manually. You access the zoom and focus controls through the Dahua web interface (direct browser access to the camera's IP address) or through a compatible Dahua NVR's camera management menu. There is no external manual ring or OSD controller required. Confirm your NVR model supports remote motorised zoom commands for this camera series before installation.

4. Does this camera produce colour footage at night?

   Only in low-light conditions with ambient illumination present. Starlight technology allows the camera to retain colour at 0.008 lux (F1.5), meaning it holds colour in environments with street lighting, floodlights, or other ambient sources. In complete darkness, the 2 IR LEDs activate and the image switches to monochrome. This camera does not have white-light LED illuminators for full-colour zero-light operation.

5. What does the DORI distance data mean for my installation planning?

   DORI (Detect, Observe, Recognise, Identify) distances indicate what level of visual detail is achievable at a given range. At the telephoto end (13.5 mm), this camera can identify a person at 28 m and recognise them at 56 m. At the wide end (2.7 mm), identification drops to 8.5 m and recognition to 17 m. For applications where you need to identify faces or read fine detail, set the zoom toward the tele end and position the camera accordingly. For broad scene coverage where detection is sufficient, the wide end is appropriate. These figures are available through Security Australia's product listings to assist in camera placement planning.

6. What is the difference between the 4K stream and the 2688 x 1520 stream on this camera?

   The 4K (3840 x 2160) stream is the highest resolution output but is capped at 15 fps. The 2688 x 1520 stream runs at 25 or 30 fps, which produces smoother motion video. For most practical surveillance use cases - walking people, vehicle movements - 25 fps at 2688 x 1520 is the more useful configuration. The 4K stream is better suited to static or slow-movement scenes where frame rate is less critical than pixel count.

7. Does this camera support two-way audio?

   No. The DH-IPC-HDW2831TP-ZS-27135-S2 does not have a built-in microphone or speaker confirmed in its specification. Two-way audio is not available on this model. If audio detection or communication capability is required for your installation, a different camera model with confirmed built-in audio hardware would be the appropriate choice.

8. How does the motorised zoom on this turret differ from a PTZ camera?

   The motorised zoom on this turret adjusts focal length remotely but does not provide continuous pan or tilt movement during live operation. Once the zoom and physical aim are set at installation, the camera covers a fixed field of view - it will not track a moving subject or pan to a new area in response to an event. A PTZ camera provides active pan, tilt, and zoom control in real time and can follow movement or shift between preset positions. The motorised zoom on this turret is an installation convenience feature, not an operational tracking capability.

Downloads & Resources

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