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 μm

Spectral Range

8 μm–14 μm

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 Distance①

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 Distance②

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 Distance③

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:

①Detection Distance: Detects objects, but cannot recognize their characteristics (objects must cover more than 3.6 pixels of the image).

②Recognition Distance: Classifies objects into general categories, such as human, vehicle (the object must cover more than 14 pixels of the image).

③Identification 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 s–1/30,000 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 mm–248 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 m–2 m (1.64 ft–6.56 ft)

Optical Zoom

45×

Aperture

F1.4–F4.5

Illuminator On/Off Control

Auto/Manual

Illumination Distance

250 m (820.21 ft)

Audio and Video

Video Compression

H.265; H.264; H.264H

Resolution

Thermal:
Main stream: 1280 × 1024; 1280 × 960 ; 720p (1280 × 720); 400 × 300; 1280 × 960 (default)
Sub stream: 640 × 512; 640 × 480; 400 × 300;

400 × 300 (default)
Visible:
Main stream: 4 MP (2560 × 1440); 1080p (1920 × 1080); 720p (1280 × 720); D1 (704 × 576); 1080p (default)
Sub stream: D1 (704 × 576); CIF (352 × 288); D1 (704 × 576) (default)

Video Frame Rate

Thermal:
Main stream: 1 fps–25 fps, 25 fps by default
Sub stream: 1 fps–25 fps, 15 fps by default
Visible:
Main stream: 1 fps–25 fps, 25 fps by default
Sub stream: 1 fps–25 fps, 15 fps by default

Audio Compression

G.711a; G.711mu; PCM

Image Encoding Format

JPEG

PTZ

Pan/Tilt Range

Thermal:
Pan: 0° to +190°
Tilt: –5° to +180°
Visible:
Pan: 0° to 360°
Tilt: –30° to +90°

Manual Control Speed

Thermal:
Pan: 0.1°/s to 100°/s
Tilt: 0.1°/s to 90°/s
Visible:
Pan: 0.1°/s to 180°/s
Tilt: 0.1°/s to 100°/s

Preset Speed

Thermal:
Pan: 0.1°/s to 100°/s
Tilt: 0.1°/s to 90°/s
Visible:
Pan: 0.1°/s to 180°/s
Tilt: 0.1°/s to 100°/s

Preset

300

Tour

8 (up to 32 presets per tour)

Pattern

5

Scan

5

Power-off Memory

Yes

Privacy Masking

4 by default

Idle Motion

Preset; Pattern; Tour; Scan; Horizontal Rotation

Function

Two-way Audio

Yes

Sound and Light Alarm

Yes

Network Protocol

HTTPS; HTTP; TCP; ARP; RTSP; RTP; UDP; RTCP; SMTP; FTP; DHCP; DNS; DDNS; PPPOE; IPv4/v6; SNMP; QoS; UPnP; NTP

Region of Interest (RoI)

Yes (customizable)

Storage

Micro SD card

Micro SD Card (Max.)

512 GB

Interoperability

CGI

Browser

IE: IE8 and later
Chrome: 42 and earlier
Firefox: 42 and earlier

User/Host

Up to 20 (total bandwidth: 64 MB)

Security

Authorized username and password; attached MAC address; encrypted HTTPS; IEEE 802.1x; controlled network access

User Management

Up to 20 users; supports multi-level user permissions (2 levels): management group and user group

Malfunction Detection

Network disconnection detection; IP conflict detection; memory card state detection; memory space detection

PIP

Yes

Intelligence

Cold/Hot Spot Trace

Yes

IVS (Perimeter Protection)

Yes. Supports tripwire and intrusion.

Target Distinction

Human/Vehicle Classification

Target Tracking

Single-scene tracking; multi-scene tracking; panoramic tracking; manual tracking; alarm linked tracking

Boat Detection

Yes

Port

Network Port

1 × RJ-45 (10/100 Base-T)

Alarm Input

7

Alarm Output

2

Audio Input

1

Audio Output

1

RS-485

1

Power

Power Supply

36 VDC/5A ± 25%

Power Consumption

Basic: 30 W
Max: 58 W (illuminator)

Environment

Operating Temperature

–40 °C to +65 °C (–40 °F to +149 °F)

Operating Humidity

≤95%

Physical Characteristics

Protection

IP66

Reliability

Surge protection: 6 kV
Air discharge: 15 kV
Contact discharge: 8 kV

Structure

Product Dimensions

484.8 mm × 267 mm × 476.5 mm (19.09" × 10.51" × 18.76") (L × W × H)

Packaging Dimensions

708 mm × 380 mm × 580 mm (27.87" × 14.96" × 22.83") (L × W × H)

Net Weight

15.9 kg (35.05 lb)

Gross Weight

21.5 kg (47.40 lb)

Perimeter Protection Distance

Focal Length

Human Distance

Vehicle Distance

25 mm

175 m (574.15 ft)

525 m (1,722.44 ft)

50 mm

350 m (1,148.29 ft)

1,050 m (3,444.88 ft)

Note:

The table displays the measured distances obtained from using the target sizes

1.8 m × 0.5 m (human) and 1.4 m × 4 m (vehicle) for testing in an environment where the temperature is 23 °C and the relative humidity is below 60%.

The table is for reference only. The distances within it are subject to actual conditions including atmospheric conditions, target size, the installation site, and more.