The DH-IPC-PFW3849S-A180-AS-PV-ANZ is an outdoor network camera that provides a 180° panoramic view by seamlessly stitching together images from its dual 4MP sensors. It's designed for comprehensive surveillance, offering smart detection and active deterrence features to enhance security. This camera is ideal for users seeking broad area coverage and proactive threat response, making it a robust solution for diverse monitoring needs without complex multi-camera setups.
Key Features
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Wide-Angle Coverage: Captures a seamless 180° panoramic image, reducing the number of cameras needed for large areas.
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Smart Motion Detection (SMD 4.0): Accurately identifies human and vehicle targets, significantly reducing false alarms from irrelevant movements.
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Active Deterrence: Emits red and blue flashing lights and a siren to warn off intruders, proactively preventing incidents.
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Two-Way Audio: Features a built-in dual microphone and speaker for clear two-way communication, allowing for direct interaction or pre-recorded messages.
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Smart Dual Light: Automatically switches between invisible IR and visible warm light, providing clear color video upon detection while minimizing light pollution.
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Flexible Storage: Supports up to a 256 GB Micro SD card for local recording, ensuring data retention even during network outages.
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Event-Triggered Tracking (EPTZ): Digitally zooms in and tracks multiple human and vehicle targets that trigger alarms, providing both a detailed view and an overall panorama.
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Robust Protection: Built with IP67 weatherproofing, ensuring reliable operation in harsh outdoor conditions.

Perfect For:
- Large residential properties
- Business parking lots
- Schoolyards and campuses
- Warehouse exteriors
- Perimeter security for commercial buildings
- Public park entrances
Installer Tips
Optimal Mounting Height: For accurate SMD 4.0 and perimeter protection, mount the camera at a height that allows for clear detection of human and vehicle shapes, typically between 2.5 to 4 meters, depending on the desired coverage area and angle.
PoE for Simplified Installation: Utilize PoE (Power over Ethernet) for installation to simplify wiring, as it provides both power and data over a single Ethernet cable, reducing cable clutter and installation time.
Pair with an AI NVR: For enhanced functionality like Quick Pick and Smart Search, connect the camera to a compatible Dahua AI NVR. This integration unlocks advanced search capabilities, making it easier to find specific events.
Customizing Voice Alerts: Take advantage of the customizable voice importing feature for the siren. Pre-record specific messages relevant to the site (e.g., "Warning, you are entering a restricted area") for more effective deterrence.
Positioning for Wide Coverage: Due to its 180° wide-angle view, strategically position the camera at corners or in the middle of a long wall to maximize coverage and minimize blind spots, potentially replacing two or more standard cameras.
Consider Network Bandwidth: While the camera offers ultra-low bit rates with H.265 and AI Coding, consider your network's bandwidth capacity, especially when setting higher resolutions and frame rates, to ensure smooth streaming and recording.
Downloads
Quick-Read Specs
Product Specifications
Feature |
Specification |
Resolution |
8 MP (4096 × 1860) |
Lens Options |
2.8mm Fixed-focal |
Night Vision |
IR (up to 25m), Warm Light (up to 20m) - Smart Dual Light |
Deterrence |
Red and Blue Flashing Lights + Siren |
AI Features |
SMD 4.0, Perimeter Protection (Intrusion, Tripwire), EPTZ, Quick Pick, AI Coding |
Audio |
Built-in Dual Mic + Built-in Speaker (Two-way talk) |
Storage |
Max. 256 GB Micro SD card |
Power |
12 VDC / PoE (802.3af) |
Weather Rating |
IP67 |

What is TIOC?
TiOC stands for Three-in-One Camera, combining Full-Colour Video, Active Deterrence, and AI Detection into one powerful security solution.
With TiOC cameras, you get:
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Full-Colour Footage 24/7 – even at night, thanks to Smart Dual Illuminators.
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Smart AI Detection – accurately identifies humans and vehicles, filtering out false
alarms caused by animals, trees, or shadows.
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Active Deterrence – red and blue warning lights plus a loud siren to stop intruders in their tracks.
These features work together to give you fast, accurate alerts and clear footage any time of day.
How Does It Work?
1. Full-Colour Night Vision with Smart Dual Illuminators
TiOC cameras automatically switch between infrared and LED lighting. When no threat is detected, they use discreet IR. When a person or vehicle enters the scene, the LED lights activate to record in full colour—helping you capture every detail clearly.



2. AI-Powered Detection
Using SMD 4.0 (Smart Motion Detection) and Perimeter Protection, the camera can tell the difference between a person, vehicle, animal, or object. This means:
- You get alerts only when it matters.
- False alarms are reduced to less than 1%.

3. Active Deterrence
When a genuine threat is detected, the camera activates built-in red and blue strobe lights along with a loud audible siren to immediately deter intruders. This proactive response helps prevent incidents before they occur. Users can schedule deterrence features to operate during specific hours—such as overnight—or customise them to suit their needs. For added convenience, a one-touch disarm function allows quick cancellation of the siren when necessary.

Extra Info
Smart Dual Illumination for Clear Night Vision
The DH-IPC-PFW3849S-A180-AS-PV integrates Dahua's Smart Dual Light technology, providing a dynamic approach to night surveillance. During typical nighttime conditions, the camera uses its invisible IR illuminators to capture clear black and white video, minimizing light pollution. However, the moment a human or vehicle target is detected within the monitoring area, the camera intelligently switches on its warm white light. This allows the camera to record crucial full-color video of the event, linking snapshots and video with vivid details. Once the target leaves the area, the warm light automatically turns off, reverting to IR illumination. This feature is invaluable for capturing detailed evidence, such as clothing color or vehicle make, which might be missed with traditional IR-only cameras.
SMD 4.0 for Intelligent Detection
SMD 4.0 (Smart Motion Detection) represents a significant leap in intelligent surveillance. Unlike basic motion detection that can be triggered by anything from falling leaves to small animals, SMD 4.0 utilizes advanced deep learning algorithms to accurately differentiate between human and vehicle targets and other irrelevant movements. This drastically reduces false alarms, saving users from constant, unnecessary notifications. For security personnel or homeowners, this means fewer distractions and more focused attention on genuine threats. When paired with a Dahua AI NVR, the Quick Pick feature further enhances efficiency, allowing users to rapidly search and retrieve video clips of specific human or vehicle events.
EPTZ for Enhanced Event Tracking
EPTZ, or Electronic Pan, Tilt, and Zoom, provides a powerful tool for analyzing alarm-triggered events. When an intelligent alarm (like perimeter intrusion) is activated, the camera's EPTZ functionality can automatically zoom in on and track the human or vehicle targets involved. The brilliance of EPTZ is its ability to simultaneously provide a detailed, zoomed-in view of the threat while maintaining the overall panoramic context. This dual perspective is incredibly beneficial for understanding the full scope of an incident and gathering comprehensive evidence, ensuring no critical details are missed.
Active Deterrence with Siren and Light
Beyond mere detection, this camera actively deters intruders with its integrated siren and red and blue flashing lights. When a perimeter event occurs (e.g., someone crosses a tripwire), the camera can immediately trigger these visual and auditory alarms. This immediate, overt response is highly effective at startling and dissuading potential intruders, often preventing an incident from escalating. The ability to customize the voice alarm with pre-recorded messages adds another layer of personalized deterrence, making the warning even more impactful and specific to the monitored environment. This proactive intervention sets it apart from cameras that only record.
Seamless Integration and Cyber Security
The DH-IPC-PFW3849S-A180-AS-PV is designed for broad compatibility, supporting ONVIF (Profile S/G/T) which allows it to integrate with various third-party NVRs and VMS platforms. For optimal performance and access to all intelligent features, integration with Dahua's Smart PSS Lite, DSS, or DMSS mobile client is recommended. Furthermore, Dahua prioritizes cyber security, implementing a suite of technologies including encrypted transmission, access control protocols, and trusted protection. This robust security framework safeguards the camera against external cyber threats and malicious attacks, ensuring the integrity and privacy of your surveillance data.
Cybersecurity Protections
Dahua builds in strong cybersecurity protections including encrypted video streams, secure firmware updates, and access controls. This guards against data breaches or unauthorized remote access — a key consideration for business and home networks alike.
More About AcuPick - Smart Video Search with Precision AI
Dahua’s AcuPick technology revolutionises video surveillance by using advanced AI to pinpoint people or vehicles across recorded footage with remarkable speed and accuracy. Instead of scrubbing through hours of video manually, AcuPick enables users to filter footage by specific targets, drastically cutting down search times and boosting operational efficiency. Integrated into a range of Dahua cameras (including TiOC series) and compatible NVRs, AcuPick delivers a seamless and intelligent search experience.

Highlights of AcuPick:
AI-Driven Precision:
AcuPick leverages intelligent algorithms to differentiate between human and vehicle activity, refining search results to what truly matters.
Smart Filtering:
Search footage using key attributes like clothing colour or vehicle type—no need to know the exact time an incident occurred.
Instant Video Recall:
With just a few clicks, users can zero in on critical moments, improving response times and streamlining investigations.
False Alarm Reduction:
By filtering out irrelevant motion, AcuPick helps reduce nuisance alerts, leading to more reliable monitoring.
Flexible Deployment:
Whether through Dahua's smart cameras or NVR integration, AcuPick fits into a wide range of security setups.
Practical Applications:
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Retail & Offices: Track customer flow or monitor for unauthorized access.
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Car Parks & Garages: Instantly retrieve footage of accidents or suspicious activity.
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Public Spaces: Quickly find persons of interest using visual identifiers.
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Residential Estates: Enhance safety by identifying vehicle movements or visitors.
AcuPick transforms surveillance from reactive monitoring to proactive intelligence, saving time while elevating security across the board.
Q&A
Q1: Can this camera record in color at night?
A1: Yes, the camera uses Smart Dual Light technology. While it typically uses IR for black and white night vision to reduce light pollution, it will automatically switch on its warm white light to record in full color when it detects a human or vehicle in the monitoring area.
Q2: How loud is the built-in speaker?
A2: The datasheet doesn't specify the exact decibel level of the speaker, but it's designed to be loud enough for effective two-way communication and to serve as an audible deterrent through its siren function.
Q3: Can the red and blue flashing lights and siren be disabled?
A3: Yes, the active deterrence features can be configured and disabled as needed through the camera's settings or the associated management software/mobile app. You can also set schedules for when they are active.
Q4: Does this camera work with NVRs from other brands?
A4: Yes, the camera supports ONVIF (Profile S/Profile G/Profile T), which allows for basic compatibility and integration with many third-party NVRs and video management systems. However, for full functionality and access to advanced AI features like Quick Pick, a Dahua AI NVR is recommended.
Q5: How long can the 256 GB Micro SD card record?
A5: The recording duration depends on several factors, including the resolution, frame rate, compression settings (H.265, AI Coding), and the amount of motion in the recorded area. With efficient H.265 and AI Coding, a 256 GB card can typically store several days to weeks of continuous recording, or significantly more if recording is primarily event-triggered.
Q6: What makes this TiOC Duo model different from other Dahua cameras?
A6: The "TiOC Duo" signifies its unique combination of dual 4MP sensors for a seamless 180° panoramic view, Tri-in-One Camera (TiOC) features (active deterrence with red/blue lights and siren, and two-way talk), and Smart Dual Light technology. It offers comprehensive coverage and proactive security in a single unit.
Q7: Will the siren and lights activate automatically?
A7: Yes, the siren and lights are part of the active deterrence system and can be configured to activate automatically when specific intelligent alarm events occur, such as perimeter intrusion or tripwire breaches detected by the camera's AI.
Q8: Can I remotely arm or disarm the alarm functions?
A8: Yes, the camera supports Dahua's One-tap Disarming function, which allows users to easily arm or disarm event linkages (like alarm triggers for the siren and lights) through the mobile app, providing convenient control for multi-scenario needs.
Comparison Table
TiOC Duo Splicing Evolution: IPC-PFW3849S-A180-AS-PV vs. Dahua TiOC 2.0 General Features
Category |
Newer Model (IPC-PFW3849S-A180-AS-PV) |
Older Model (Representative TiOC 2.0 - e.g., DH-IPC-HFW3849T1-AS-PV-S4) |
Image Sensor |
Dual 1/2.7" CMOS |
1/2.8" CMOS or 1/1.8" CMOS (depending on specific TiOC 2.0 model) — The newer model features a dual-sensor setup specifically for its 180° splicing functionality.
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Maximum Resolution |
8 MP (4096 × 1860) @ 20 fps (spliced 180° image) |
8 MP (3840 × 2160) @ 20 fps (standard view) — Both offer 8MP, but the newer model achieves it via splicing for a wide panoramic view.
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Low-Light Performance / Minimum Illumination (Color) |
0.005 lux@F1.4 (Color, 30 IRE) |
Typically 0.004 lux@F1.0 (Color, 30 IRE) or similar — The older generation TiOC 2.0 often focused on extremely low lux with larger aperture lenses. The newer model emphasizes panoramic view with good, but slightly higher, minimum illumination.
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Illumination Type and Range |
Built-in IR LED (25m) and Warm Light (20m) - Smart Dual Light (2 IR LEDs, 2 Warm Lights) |
Built-in IR LED (typically 30m-60m) and Warm Light (typically 30m-60m) - Smart Dual Light (often 1 IR LED, 1 Warm Light) — Older TiOC 2.0 models might have higher *single* illuminator ranges, while the newer 180° camera optimizes illumination for its wide field.
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Smart Motion Detection (SMD) version or equivalent AI features |
SMD 4.0 |
SMD 3.0 — SMD 4.0 offers enhanced accuracy in human and vehicle classification, significantly reducing false alarms compared to SMD 3.0.
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Active Deterrence capabilities |
Sound and light alarm (red and blue lights), customizable voice importing |
Sound and light alarm (red and blue lights), customizable voice importing — Core active deterrence features are consistent, though the implementation and effectiveness might be refined in the newer model.
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AI Functions |
Perimeter Protection (Intrusion, Tripwire with human/vehicle classification), EPTZ, Quick Pick, AI Coding, Scene Self-adaptation (SSA) |
Perimeter Protection (Intrusion, Tripwire with human/vehicle classification), SMD 3.0, AI Coding, (some models might have EPTZ, Quick Pick with AI NVR) — The newer model explicitly highlights EPTZ and Quick Pick as standard integrated features.
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Smart Dual Light functionality |
Yes, intelligently switches between IR and warm light upon target detection to capture full-color video. |
Yes, intelligently switches between IR and warm light upon target detection to capture full-color video. — This core TiOC feature is present in both generations.
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Microphone & Speaker details |
Built-in dual Mic; built-in speaker, supports two-way talk |
Built-in Mic; built-in speaker, supports two-way talk — The newer model specifies a dual microphone array for potentially clearer audio pickup.
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Alarm & Audio I/O |
Alarm: 1 in, 1 out; Audio: 1 in, 1 out (RCA ports) |
Alarm: 1 in, 1 out; Audio: 1 in, 1 out (RCA ports) — Standard I/O remains consistent.
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Cybersecurity features |
Video encryption, Firmware encryption, Configuration encryption, Digest, WSSE, Account lockout, Security logs, IP/MAC filtering, X.509 certification, syslog, HTTPS, 802.1x, Trusted boot, Trusted execution, Trusted upgrade
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Often includes video/firmware/config encryption, account lockout, HTTPS, 802.1x. — The newer model explicitly lists Trusted boot, Trusted execution, and Trusted upgrade, indicating an enhanced focus on cybersecurity at a deeper system level.
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Power Options and reliability features |
12 VDC (±30%) / PoE (802.3af), wide voltage tolerance |
12 VDC / PoE (802.3af), often with wide voltage tolerance. — Consistent power options.
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Construction & Environmental Protection |
Metal casing, IP67 protection |
Metal casing, IP67 protection (some older bullet models might be IP66) — IP67 is standard for outdoor models in both generations.
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Field of View (FoV) for common lens sizes |
Horizontal: 180°; Vertical: 86° (for 2.8mm fixed lens) |
Horizontal: 106° (for 2.8mm fixed lens on single-lens camera) — The newer model's 180° panoramic FoV is a fundamental design difference and major advantage.
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DORI Distances (Detect, Observe, Recognize, Identify) |
Detect: 50.6m, Observe: 20.2m, Recognize: 10.1m, Identify: 5.1m (for 2.8mm) |
Similar DORI distances for single-lens 2.8mm 8MP cameras, but for a standard view. — The interpretation of DORI for a stitched 180° image is different, covering a much wider area.
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MicroSD Card Support |
Max. 256 GB |
Max. 256 GB — MicroSD capacity has largely remained consistent for this series.
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Lens Mount type |
M12 |
M12 — Standard fixed-focal lens mount.
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Physical attributes (dimensions, weight) |
183.1 mm × 99.0 mm × 78.0 mm; 695 g |
Varies significantly by form factor (e.g., standard bullet or eyeball would be different dimensions). — Specific to the 180° splicing design.
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Streams and Resolution Options |
3 streams: Main (4096 × 1860@20 fps), Sub (1200 × 530@20 fps), Third (1920 × 860@20 fps) |
Typically 3 streams: Main (3840 × 2160@20 fps), Sub (704 × 576/480@20 fps), Third (often 1280 × 720@10-20 fps). — The newer model's stream resolutions are optimized for its panoramic output.
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Operating Temperature |
–40 °C to +60 °C (–40 °F to +140 °F) |
–40 °C to +60 °C (–40 °F to +140 °F) — Wide operating temperature range is a standard for professional outdoor cameras.
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Summary Recommendation
Choose the **newer model, the IPC-PFW3849S-A180-AS-PV**, when your primary need is expansive, seamless panoramic surveillance from a single camera, combined with the most accurate AI detection and advanced cybersecurity. Its unique 180° splicing image output makes it ideal for covering large open areas without the blind spots or complexity of multiple cameras.
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Unmatched 180° Panoramic View: Drastically reduces the number of cameras needed for wide area coverage.
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Enhanced AI with SMD 4.0: Provides superior accuracy in distinguishing humans and vehicles, leading to fewer false alarms.
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Dual Microphone Array: Offers potentially clearer and more effective two-way audio.
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Advanced Cybersecurity: Features like Trusted boot/execution/upgrade provide a stronger defense against cyber threats.
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Integrated EPTZ: Allows for simultaneous zoomed-in tracking of multiple targets within the wide panoramic view.
Consider opting for an **older model, like a representative TiOC 2.0 camera (e.g., DH-IPC-HFW3849T1-AS-PV-S4)**, if you prioritize a slightly lower cost, or if your specific application benefits from a traditional single-lens field of view and potentially longer IR/white light range from a dedicated illuminator. These models still offer robust active deterrence and Full-color capabilities from the previous generation of Dahua's AI series.
- Cost-Effective Solution: Generally available at a lower price point than the specialized 180° splicing model.
- Proven TiOC 2.0 Features: Still provides reliable SMD 3.0, active deterrence, and Smart Dual Light.
- Traditional Form Factor: Suitable for installations where a standard bullet or eyeball camera is preferred for its specific coverage pattern.
- Potentially Longer Illumination Range: Some older single-lens TiOC models might offer greater IR or warm light distances.