The DH-IPC-HDBW2431R-ZS-S2 is a 4MP vari-focal dome camera from Dahua’s Lite Series, featuring advanced H.265 compression, starlight low-light performance, and built-in IR for 24/7 clarity. With intelligent detection features like tripwire and intrusion, plus rugged protection ratings (IP67 & IK10), it’s an ideal choice for small to mid-size projects in dynamic lighting and outdoor conditions.
Key Features
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Starlight Low‑Light Engine – Captures usable, colorful video when it's nearly dark.
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Motorized 2.7–13.5 mm Lens – Allows remote zooming and focussing during install.
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Smart H.265+/H.264+ Codec – Cuts bandwidth and file sizes by up to 70%.
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WDR (120 dB) – Balances bright and shadowy areas for clear, detailed image.
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Smart IR Illuminator (40 m) – Auto-adjusted infrared prevents bright spots in close proximity.
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IVS Analytics – Supports tripwire and intrusion alerts to reduce false alarms.
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Built-In Alerts for Device Events – Flags SD card issues, tampering, IP conflicts, and more.
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Rugged Construction – Rated IP67 and IK10 for resistance to weather and vandalism.
Perfect For:
- Parking lot entrances and gate crossings
- Commercial building lobbies and corridors
- School or university pathways
- Retail storefront entrances
- Apartment complex perimeters
- Small-to-medium indoor/outdoor installations
Install Tips
- Position camera at 3–4 m height to optimize tripwire/intrusion detection.
- Use motorized zoom to fine-tune lens during install—3 m indoor vs 13 mm for longer corridors.
- Enable IVS tripwire alerts early to reduce nuisance notifications.
- Use PoE switches for clean, single-cable installations.
- Combine PFA137 junction box with PFB203W wall mount or pole-mounted PFA152-E for best fit.
- Format microSD (up to 256 GB) via camera menu before deploying.
Downloads
Quick-Read Specs Card
| Feature |
Specification |
| Resolution |
Up to 2688×1520 (4 MP) at 20 fps |
| Lens |
Motorized 2.7–13.5 mm varifocal |
| Night Vision |
Smart IR up to 40 m |
| AI Features |
Tripwire & Intrusion detection |
| Smart Codec |
H.265+ / H.264+ |
| Audio |
None |
| Storage |
MicroSD up to 256 GB, NAS, FTP/SFTP |
| Power |
PoE (802.3af) or 12 V DC |
| Weather Rating |
IP67 |
| Vandal Resistance |
IK10 |
Extra Info
Smart Codec Efficiency – Adaptive Compression for Optimized Storage
With support for Smart H.265+/H.264+, this camera uses dynamic scene-adaptive encoding to automatically reduce video bitrate based on motion and image complexity. This significantly lowers file sizes and network load, enabling efficient long-term recording while maintaining high visual clarity. It’s especially useful for large installations, cloud storage setups, or locations with limited bandwidth.
Starlight Sensor – Clear Color Imaging in Low Light
Powered by ultra-sensitive low-light sensors and precision optics, Dahua’s Starlight technology captures full-color video in dim environments where most cameras would already switch to black-and-white IR. It extends the duration of color visibility into dusk, dawn, or shadowed areas, allowing for better identification of people or vehicles before IR is needed.
IVS Analytics (Tripwire & Intrusion) – Intelligent Motion Detection
This camera supports Intelligent Video System (IVS) analytics, including customizable tripwire and intrusion zones. When these virtual boundaries are crossed by a person or vehicle, the system can trigger instant alerts, recording, or external alarms. This significantly improves accuracy compared to standard motion detection by reducing false alerts from irrelevant movement like swaying trees or rain.
Smart IR with Rolloff Control – Even Illumination at Night
Equipped with Smart IR technology, the infrared LEDs automatically adjust brightness based on subject distance. Rolloff control prevents overexposure (or "white-out") of nearby objects, delivering balanced lighting across the scene — ideal for hallways, gates, and confined areas where subjects may get close to the lens.
Device Health Alerts – Proactive System Monitoring
The camera features built-in health diagnostics that monitor for operational issues like SD card failures, IP address conflicts, network disconnections, or tampering attempts. These alerts ensure that users and admins are notified immediately of any malfunction, enhancing system reliability and reducing downtime.
Varifocal Flexibility – Remote Lens Adjustment for Perfect Framing
With a motorized 2.7–13.5 mm varifocal lens, installers can remotely adjust the camera’s field of view from wide-angle coverage to narrow zoomed-in monitoring. This makes it easy to fine-tune the focus and composition after mounting, saving time during installation and providing adaptable surveillance for evolving site needs.
Q&A
Q: Can this record in color at night?
A: No, it uses IR illumination for black-and-white night vision up to 50 meters.
Q: Does this camera have a siren or flashing lights?
A: No. This model does not include active deterrence features like lights or sirens.
Q: Will it work with other NVR brands?
A: Yes. It supports ONVIF (Profiles S/G/T), making it compatible with most third-party NVRs.
Q: Can I listen and talk through the camera?
A: It has a built-in mic and audio input/output, but two-way talk depends on your NVR or software setup.
Q: What’s the difference between this and a TiOC model?
A: TiOC models include active deterrence features like red/blue lights and sirens. This camera focuses on analytics and durability.
Q: How much recording can a 256GB card store?
A: Depending on bitrate and settings, roughly 1–2 weeks of continuous recording.
Q: Can I use this without an NVR?
A: Yes. With a microSD card installed, it can record independently for local playback via the app or browser.
