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Help CenterDahua dh - P40a2 - wt - pv 4 - Megapixel Network Surveillance High - Definition Infrared Camera
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Adopts a high-performance 4-megapixel 1/3-inch CMOS image sensor, with good low-light performance and high image clarity.
It can output 4 million (2560x1440) @ 20 fps and supports 3 million (2304 ×
1296) @ 30 fps.
Supports H.265 encoding, with a high compression ratio and ultra-low bitrate.
Comes with a built-in high-efficiency warm light and infrared fill light. The infrared monitoring distance is 50 meters, and the warm light monitoring distance is 30 meters.
Supports ROI, SMART H.264/H.265, with flexible encoding, suitable for different bandwidth and storage environments.
Supports sound and light alarm linkage. When an alarm occurs, it can trigger a linked sound alarm and the warning light to flash.
Supports digital wide dynamic range, 3D noise reduction, and backlight compensation, suitable for different monitoring environments.
Supports various anomaly detections: motion detection, video occlusion, audio anomaly detection, no SD card, insufficient SD card space, SD card error, network disconnection, IP conflict, illegal access.
Supports a 256G Micro SD card, with a built-in MIC and a built-in speaker.
Supports DC12V power supply.
Supports IP67 protection level.
Application scenarios
Suitable for places such as finance, telecommunications, supermarkets, hotels, schools, airports, and factories that require ultra-high-definition images and have complex lighting conditions.
Quotation parameters

Default parameters
Sensor type: 1/3-inch CMOS;
Pixels: 4 million;
Resolution: 2560×1440;
Illuminance: 0.002lux (color mode); 0.0002lux (black and white mode); 0lux (fill light on);
Fill light distance: 50m (infrared) 30m (warm light);
Fill lights: 2 (infrared lights); 2 (warm lights);
Lens type: Fixed focus;
Lens focal length: 3.6mm;
Lens aperture: F1.6;
Field of view: Horizontal: 78°; Vertical: 41°; Diagonal: 94°;
Intelligent encoding: H.264: Supported; H.265: Supported;
Wide dynamic range: Supported;
Built-in MIC: Supported;
Built-in speaker: Supported;
Alarm events: No SD card; Insufficient SD card space; SD card error; Network disconnection; IP conflict; Motion detection; Video occlusion; Audio anomaly detection; Illegal access; Security anomaly; Intelligent motion detection (human);
Wi-Fi: Supported, IEEE 802.11b/g/n 2.4～2.4835GHz, 2.4G single frequency;
Access standards: ONVIF; CGI; P2P;;
Number of preview users: 6 (total bandwidth: 36M);
Micro SD card: 256GB;
Power supply method: DC12V;
Protection level: IP67
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