Dahua DH-IPC-HFW1831CP-PIR-0280B 8MP (4K) Starlight IP Mini Bullet Fixed 2.8mm IR 20m+White Light

Model: DH-IPC-HFW1831CP-PIR-0280B

Who This Is For

For property owners and installers who need compact 4K coverage on entry points, driveways, and narrow outdoor corridors without committing to a full-size bullet housing. The Dahua HFW1831CP-PIR delivers 8MP resolution through a 2.8mm fixed lens in a discreet mini bullet form, combining passive infrared detection with both IR illumination and white light in a single unit. That PIR-triggered white light element makes it suitable for scenarios where deterrence matters as much as recording - a side gate, rear car park entry, or small retail loading area where you want the camera to do more than passively capture. IP66 weather resistance and PoE power keep the install clean, and the Starlight sensor handles low-light transitions without heavy IR washout on nearby surfaces. This is a solid entry-level 4K option for installers running small residential or light commercial jobs where image detail and a compact profile are both priorities.

What This Camera Actually Does

Who Buys This Model

• Residential installers: Running small jobs on homes where the client wants 4K detail at the front door or side gate but prefers a compact profile over a full-size bullet that draws attention.
• Small business owners: Monitoring rear car parks, roller door entries, and pedestrian access points where the PIR-triggered white light adds a deterrence element beyond passive recording.
• Body corporate managers: Specifying cameras for unit complex entry points and visitor parking areas where a discreet mini bullet suits the aesthetic and PoE keeps cabling costs down.
• DIY-capable homeowners: Comfortable running Cat6 cable who want genuine 4K resolution without the bulk of a traditional bullet and who have a PoE NVR or switch already in place.

Honest Assessment

The HFW1831CP-PIR delivers genuine 4K resolution in a compact mini bullet housing that suits installs where a full-size camera would look out of place or require more mounting hardware. The combination of PIR detection and white light gives it a deterrence function that standard IR-only cameras at this price point lack, and Starlight sensitivity means low-light performance holds up reasonably well before the IR kicks in. H.265 encoding at 8MP keeps storage requirements practical on modest NVR setups.

Where this camera has limitations: the 2.8mm fixed lens produces a wide field of view suited to close-range coverage, not long-distance identification. The 20m IR range also caps its effectiveness on open approaches or large car parks. If your install requires optical zoom, longer IR reach, or AI-based object classification, a different camera type available through Security Australia will serve that scenario better. This is a focused, no-frills 4K mini bullet - effective within its design parameters.

Before You Buy

Quick Fit Check

• Good match if: You are covering a residential entry point, carport, or pedestrian gate within 20m and want 4K detail plus PIR-triggered white light deterrence in a compact housing.
• Good match if: Your install runs on a PoE NVR or switch and you want to avoid running separate power to the camera position - the single Cat6 cable approach keeps the job clean and fast.
• You may need a different model if: Your application requires coverage beyond 20m in full darkness, long-range number plate identification, or wide-area monitoring - a full-size bullet with extended IR range or a PTZ camera will be better suited to those scenarios.

Key Features & Technical Specifications

Real-World Scenarios

How It Compares

• Choose this if: You need 4K resolution and PIR-triggered white light deterrence in a compact outdoor housing powered by a single PoE cable - particularly for short-range entry points and pedestrian access zones within 20m.
• You may need a different model if: Your install requires coverage beyond 20m in full darkness, varifocal flexibility, or advanced AI object classification - a full-size IR bullet with extended range or an AI-capable turret camera will handle those requirements better.
• Pairs well with: A PoE NVR with H.265 support for efficient 4K storage, or a managed PoE switch if you are building a multi-camera system across a property.

Common Questions

1. Does the white light come on all the time or only when someone is detected?

   The white light is PIR-triggered - it activates when the passive infrared sensor detects body heat in the field of view. It does not run continuously. This keeps power draw low and means the light flash serves as a deterrent signal rather than a permanent illumination source. During periods of no activity, the camera records in IR monochrome mode using the 20m IR LEDs.

2. Will this camera work with any PoE NVR or switch?

   Yes, with standard IEEE 802.3af PoE. Most current Dahua and third-party PoE NVRs and managed switches operating at 802.3af or 802.3at (PoE+) will power this camera over a single Cat5e or Cat6 cable run. Check your NVR or switch specifications to confirm 802.3af port availability before ordering, particularly if you are adding this camera to an existing system.

3. What is the actual field of view with the 2.8mm fixed lens?

   The 2.8mm lens produces a wide-angle field of view - typically in the range of 95-105 degrees horizontal on an 8MP sensor. This makes it well suited to covering entry points, gate openings, and short corridors where you want broad coverage within a close distance. It is not suited to identifying subjects at long range or reading number plates beyond approximately 6-8 metres from the camera.

4. Is 15fps at 4K sufficient for general security recording?

   Yes, for most property monitoring use cases. At 15fps, movement is still clearly captured for review purposes including pedestrian activity and slow vehicle movement. The frame rate becomes a consideration if you need smooth recording of fast-moving subjects or high-traffic entry points - in those cases a camera capable of 25fps at full resolution would be more appropriate.

5. How much storage will 4K recording from this camera use?

   H.265 encoding significantly reduces file sizes compared to H.264 at equivalent resolution. As a general guide, continuous 4K recording at 15fps with H.265 will consume roughly 20-35GB per day depending on scene activity and compression settings. Motion-triggered or scheduled recording reduces this substantially. Use your NVR's storage calculator to confirm capacity based on your intended retention period and camera count.

6. Does this camera support remote viewing on a mobile device?

   Yes. The HFW1831CP-PIR supports the Dahua DMSS mobile application as well as web viewer access and CMS platforms (DSS/PSS). Remote viewing requires the camera to be accessible via your network, typically through port forwarding on your router or a P2P cloud connection through DMSS. Setup details are available through Security Australia's support resources with the product datasheet.

7. Will this camera handle direct weather exposure on an external wall?

   Yes, within its IP66 rating. IP66 protects against powerful water jets and complete dust ingress, making it suitable for exposed eave mounts, fascia installs, and external wall positions subject to driving rain. It is not rated for submersion or high-pressure industrial wash-down. For installs in particularly harsh coastal or industrial environments, confirm the mounting position provides some degree of overhead shelter where possible to extend the housing's long-term condition.

Product Video Samples

Downloads & Resources

• Dahua HFW1831CP-PIR Datasheet (PDF)