The Dahua IPC-HDBW2431R-ZAS-S2 is a robust 4MP dome camera designed for clarity, durability, and smart detection in demanding environments. With starlight low-light performance and a motorized vari-focal lens, it excels in monitoring variable areas with precision. Built-in analytics enhance proactive security, while vandal-proof housing ensures long-term protection in public or exposed spaces.
Key Features
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Motorized Vari-focal Lens – Adjust zoom remotely to get the best view without needing to re-install the camera.
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Starlight Technology – Capture clearer, more colorful footage even in near-darkness.
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Smart IR up to 40m – Automatically adjusts IR intensity to prevent overexposure in night shots.
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Intelligent Detection (IVS) – Detects tripwire and intrusion events for smarter alerts.
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WDR (120dB) – Handles challenging lighting conditions with clear detail in both bright and dark areas.
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IP67 & IK10 Rated – Withstands harsh weather and resists vandalism — ideal for public or outdoor installs.
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MicroSD Storage (up to 256GB) – Record locally without needing an NVR.
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Two-Way Audio Support – Built-in audio I/O allows real-time listening and speaking (with external mic/speaker).
Perfect For:
- Public building entrances
- Retail storefronts
- Banks and ATMs
- School or campus monitoring
- Warehouses and loading bays
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Apartment or condo hallways
Install Tips
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Best Mount Height: Install at 8–10 feet for optimal identification.
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Zoom for Zones: Use motorized lens to focus tighter on gates or entry paths.
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Use PoE for Clean Wiring: Simplifies power and data with one cable.
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Pair with SD Card for Backup: Enables local recording even if network fails.
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Ideal for Indoor & Outdoor: Durable enough for both thanks to IP67 and IK10.
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Test IR Angle at Night: Smart IR works best when adjusted per scene distance.
Downloads
Quick-Read Specs Card
| Feature |
Details |
| Resolution |
4MP (2688 × 1520) |
| Lens |
2.7–13.5mm motorized vari-focal |
| Night Vision |
Smart IR, up to 40m |
| Deterrence |
No active deterrence |
| AI Features |
Tripwire, Intrusion Detection |
| Audio |
1 In / 1 Out RCA (external) |
| Storage |
microSD up to 256GB |
| Power |
12VDC / PoE (802.3af) |
| Weather Rating |
IP67 |
| Vandal Rating |
IK10 |
Extra Info
Starlight Low-Light Imaging – Color Vision in the Dark
Equipped with Dahua’s advanced Starlight sensor, this camera captures detailed, full-color footage even in extremely low-light environments. Unlike standard infrared cameras that switch to black-and-white early, this model retains color longer into the night, improving object recognition and situational awareness. Ideal for parking areas, dim hallways, or exterior building perimeters.
Smart H.265+ Compression – Efficient Storage & Bandwidth Usage
Using scene-adaptive encoding, Smart H.265+ reduces file sizes by up to 70% compared to traditional H.264, while preserving image quality. This makes it perfect for systems with long retention periods, cloud backup needs, or limited network bandwidth, such as rural sites or multi-camera installations.
Advanced IVS Detection – Intelligent Video Surveillance
Integrated Intelligent Video System (IVS) functions like tripwire and intrusion detection allow users to define virtual boundaries or sensitive zones. When these are crossed by a person or vehicle, the system can trigger alerts, record video clips, or even activate external alarms—providing a proactive layer of security.
IP67 + IK10 Protection – Built for Rugged Use
With an IP67 weatherproof and IK10 vandal-resistant rating, this camera is ready for outdoor or high-traffic deployments. It resists dust, rain, and physical impact—making it a great fit for locations like gated entries, commercial parking lots, warehouses, or school campuses.
Audio & Alarm I/O – Expand Surveillance Functionality
The camera supports external audio input/output and alarm connections, enabling two-way communication, custom alert responses, or automated deterrents (like sirens or strobes). This enhances its flexibility in scenarios requiring interactive security, such as intercom-style gate access or shoplifting deterrents.
Cybersecurity Ready – Built for Safe Deployment
To protect sensitive data and maintain system integrity, this model includes multi-layer security protocols like firmware encryption, HTTPS transmission, secure boot, and IP filtering. This ensures resilience against unauthorized access, data leaks, and malicious attacks, meeting compliance for modern cybersecurity standards.
Q&A
Q: Does this camera work at night in full colour?
A: It uses Starlight technology for color in low light, but may switch to B&W with IR in very dark scenes.
Q: Can I zoom in remotely?
A: Yes, the motorized lens allows remote zoom and focus adjustments via NVR or app.
Q: Is it vandal-proof?
A: Yes, it’s IK10-rated — it can handle impacts from tools or vandalism attempts.
Q: What mobile app works with this?
A: Dahua’s DMSS app for Android and iOS supports live view, playback, alerts, and zoom.
Q: Will it work with my non-Dahua NVR?
A: Yes, it supports ONVIF (Profiles S/G/T) and should work with most major brands.
Q: How much can it record to SD card?
A: Up to 256GB — this can store several days to weeks of footage depending on resolution and compression.
Q: Can the audio be heard in real time?
A: Yes, with a connected mic/speaker and compatible software, you can hear and speak live.
Q: What happens if the network goes down?
A: The camera can continue recording to the SD card independently.
