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About Dahua
PTZ4M231-HNR-GA-GHW
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PTZ4M231-HNR-GA-GHW
2MP 31x IR Wizmind Portable Network Positioning System (Without Battery)
Key Points
High-Quality Imaging with 2MP Resolution
31x Optical Zoom Provides Detailed Long-Range Surveillance
1/1.8″ CMOS Sensor Ensures Premium Images
Expansive Night View With up to 100m IR Distance for 24/7 Monitoring
Auto Tracking 3.0：Effective Target Monitoring with Detailed Intruder Trajectories
Real-Time Communication via Built-In Two-Way Talk
IP66 & TVS 6000V Protection with Lightning/Surge/Voltage Transient Resistance
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Datasheet
Specifications
Camera
Image Sensor
1/1.8″ CMOS
Pixel
2 MP
Max. Resolution
1920 (H) × 1080 (V)
ROM
4 GB
RAM
1 GB
Electronic Shutter Speed
1s–1/30,000s
Scanning System
Progressive
Min. Illumination
0.001 lux@F1.6 (Color, 30 IRE);
0.0001 lux@F1.6 (B/W, 30 IRE);
0 lux (illuminator on)
Illumination Distance
100 m (328.08 ft) (IR)
Illuminator On/Off Control
Zoom Prio; Manual; Auto; Off
Illuminator Number
3 (IR light)
Lens
Focal Length
6 mm–186 mm
Max. Aperture
F1.6–F4.0
Field of View
H: 59.8°–2.8°; V: 33.7°–1.9°; D: 63.3°–4°
Optical Zoom
31 ×
Focus Control
Auto; Semi-Auto; Manual
Iris Control
Auto; Manual
DORI Distance
Detect
Observe
Recognize
Identify
2565.5 m (8416.99 ft)
1013.4 m (3324.80 ft)
513.3 m
(1684.06 ft)
256.6 m
(841.86 ft)
DORI (Detect, Observe, Recognize, Identify) is a standard system (EN-62676-4) for defining the ability of a person viewing the video to distinguish persons or objects within a covered area. The numbers in this table do not reflect intelligent function distances. For intelligent function distances, refer to installation and commissioning manual/project design tool.
PTZ
Pan/Tilt Range
Pan: 0° to 360° endless;
Tilt: -90 ° to +30°
Manual Control Speed
Pan: 0.1°/S–120°/s;
Tilt: 0.1°/S–70°/s
Preset Speed
Pan: 0.1°/S–169°/s
Tilt: 0.1°/S–160°/s
Preset
300
Tour
8 (up to 32 presets per tour)
Pattern
5
Scan
5
Power-off Memory
Yes
Idle Motion
Pattern; Preset; Scan; Tour
PTZ Protocol
DH-SD
Pelco-P/D (Auto recognition)
Intelligence
Video Metadata
Supports detection of motor vehicles, non-motor vehicles, faces and human bodies, optimization, capturing pictures, and uploading high-quality face snapshots. It extracts attributes from motor vehicles, detecting up to 10 attributes for them.
IVS (Perimeter Protection)
Tripwire; intrusion; crossing fence detection; loitering detection; abandoned/missing object; fast moving; parking detection; people gathering; human alarm classification; linkage tracking
Face Detection
Supports face detection, optimization, capturing pictures, uploading high-quality face snapshots and enhancing face images. Attribute Extraction is also supported, where 6 attributes and 8 expressions can be detected. Face cutout is also offered, where you can cutout one face at a time and customize the size to be a one-inch photo. The supported methods for capturing snapshots are real-time capturing, quality first, and selecting a preferred image among a group of snapshots.
Construction Monitoring
Detects 6 helmet colors: Red, orange, yellow, blue, white, and black. An alarm will be triggered when a person is not wearing a helmet or when the color of the helmet that they are wearing does not match the configured color. It also supports compliance detection for work uniforms. Up to 5 work uniform sample libraries can be uploaded, which together can contain up to 1,000 images (the images must be 1080p and in the JPG
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