Dahua 4MP Thermal Network Smart Linkage Camera 250m - 50mm

Thermal

Detector Type

Vanadium oxide uncooled focal plane detector

Effective Pixels

400 (H) × 300 (V)

Pixel Pitch

17 m

Spectral Range

8 m14 m

Sensitivity (NETD)

<35 mK (@f/1.0)

Focal Length

25 mm; 50 mm

Field of View

25 mm: H: 15.5°; V: 11.6°
50 mm: H: 7.8°; V: 5.8°

Thermal Focus Control

Fixed-focal

Close Focus Distance

25 mm: 1 m (3.28 ft)
50 mm: 1 m (3.28 ft)

Detection Distance

25 mm: Vehicle: 2,262 m (7,422.71 ft);

Human: 735 m (2,411.42 ft)
50 mm: Vehicle: 4,525 m (14,845.43 ft);

Human: 1,471 m (4,826.12 ft)

Recognition Distance

25 mm: Vehicle: 555 m (1,820.67 ft);

Human: 189 m (620.08 ft)
50 mm: Vehicle: 1,110 m (3,641.33 ft);

Human: 378 m (1,240.16 ft)

Identification Distance

25 mm: Vehicle: 280 m (919.00 ft);

Human: 95 m (311.68 ft)
50 mm: Vehicle: 560 m (1,838.01 ft);

Human: 189 m (620.08 ft)

Note:

Detection Distance: Detects objects, but cannot recognize their characteristics (objects must cover more than 3.6 pixels of the image).

Recognition Distance: Classifies objects into general categories, such as human, vehicle (the object must cover more than 14 pixels of the image).

Identification Distance: Classifies objects into specific categories based on their characteristics, such as engineering truck, car (the object must cover more than 28 pixels of the image).

Digital Detail Enhancement (DDE)

Yes

Digital Zoom

19 levels

Thermal AGC

Auto/Manual

Thermal Noise Reduction

2D NR/3D NR

Image Flip

180°; Mirror

Color Palettes

18 (white hot/black hot/fusion/rainbow/golden autumn/midday/iron red/amber/jade/sunset/icefire/painting/pomegranate/emerald /spring/summer/autumn/winter)

Visible

Image Sensor

1/1.8" CMOS

Max. Resolution

2560 (H) × 1440 (V)

Pixel

4 MP

Min. Illumination

Color: 0.001 lux@F1.4
Black & white: 0.0001 lux@F1.4
0 lux (IR on)

Visible AGC

Auto/Manual

Visible Noise Reduction

2D NR/3D NR

S/N Ratio

55 dB

White Balance

Auto; manual; indoor; outdoor; tracking; sodium lamp; street lamp; natural

Defog

Electronic defog

Electronic Shutter Speed

1 s1/30,000 s (auto/manual)

BLC

Yes

WDR

Yes

HLC

Yes

Digital Zoom

Yes

Day/Night

Auto (ICR); Color; B/W

Iris Control

Auto

Image Flip

180°

Exposure Compensation

Yes

Visible Focus Control

Auto/semi-auto/manual

Focal Length

5.5 mm248 mm

Zoom Speed

<7 s

Field of View

H: 61.8°2.2°
V: 36.3°1.3°
D: 69.2°2.4°

Close Focus Distance

0.5 m2 m (1.64 ft6.56 ft)

Optical Zoom

45×

Aperture

F1.4F4.5

Illuminator On/Off Control...