Dahua 2MP Starlight Turret

SKU: DT2231EM28

Quick Overview

2MP, HD-CVI, Starlight, 2.8mm, IR, IP67

Dahua Part HDW2231EMP

Ultra Low Lux Starlight

A perfectly IR aligned Lens combined with ultra low lux imaging technology allows this camera to see perfectly in pitch black conditions. Night time images appear crisp, sharp and well exposed.

Ultra Sharp Image 

HD-CVI allows for ultra sharp Full HD video to be delivered over coaxial or CAT5/6 cable using HD-CVI baluns.  

Night Vision

This dome features infrared night vision encorporating the latest generation LED array chip for viewing in pitch black up to 50m.

WDR

This camera features hardware accelerated full WDR.  This helps the camera see better in challenging lighting conditions with strong backlight.  Settings can be adjusted via the cameras on screen menu.

What is HD-CVI 

HD-CVI is a Dahua developed technology that allows transmission of HD video signals over standard coaxial cable of up to 450m.    Transmission is completely uncompressed and is not subject to latency or bandwidth issues.  the HD-SDI format allows allows the transmission of audio and PTZ control over the same coaxial cable. Low cost HD-CVI baluns even allow transmission of CAT5 or CAT6 cabling.     HD-CVI is very low cost when compared with both HD-SDI and IP because the camera itself does not require the same amount of processing power (ie no onboard CPU and RAM required).    

HD-CVI allows a very easy upgrade from less sharp analogue CCTV (0.4MP) to crystal clear 2MP HD imaging or it can be used as a low cost method for any new installation. 

  • Starlight, 120dB true WDR, 3DNR
  • Max 30fps@1080P
  • HD and SD output switchable
  • 2.8mm
  • Max. IR length 50m, Smart IR
  • IP67, DC12V 

Camera

Image Sensor

1/2.8" CMOS

Effective Pixels

1937(H)×1097(V), 2.1MP

Scanning System

Progressive

Electronic Shutter Speed

PAL: 1/4s~1/100000s

NTSC: 1/3s~1/100000s

Minimum Illumination

0.005Lux/F1.6, 30IRE, 0Lux IR on

S/N Ratio

More than 65dB

IR Distance

Up to 50m (164feet)

IR On/Off Control

Auto / Manual

IR LEDs

1

Lens

Lens Type

Fixed lens / Fixed iris

Mount Type

Board-in

Focal Length

2.8mm

Max Aperture

F1.6

Angle of View

H: 87° (110.5°/52.9°)

Focus Control

N/A

Close Focus Distance

1200mm (500mm, 1800mm)

47.24'' (19.69'', 70.87'')

DORI Distance

Note: The DORI distance is a “general proximity” of distance which makes it easy to pinpoint the right camera for your needs. The DORI distance is calculated based on sensor specification and lab test result according to EN 62676-4 which defines the criteria for Detect, Observe, Recognize and Identify respectively.
 

DORI

Definition

Distance

Detect

25px/m

(8px/ft)

2.8mm: 42m(138ft)

3.6mm: 55m(180ft)

6mm: 81m(266ft)

Observe

63px/m

(19px/ft)

2.8mm: 17m(56ft)

3.6mm: 22m(72ft)

6mm: 32m(105ft)

Recognize

125px/m

(38px/ft)

2.8mm: 8m(26ft)

3.6mm: 11m(36ft)

6mm: 16m(52ft)

Identify

250ppm

(76px/ft)

2.8mm: 4m(13ft)

3.6mm: 6m(20ft)

6mm: 8m(26ft)

Pan / Tilt / Rotation

Pan/Tilt/Rotation

Pan: 0° ~ 360°

Tilt: 0° ~ 70°

Rotation: 0° ~ 360°

Product Attachments

View File2MP CVI Starlight Turret    Size: (1.22 MB)

Data Sheet