Top CCTV Equipment  Hybrids  Cameras  Dome Cameras with Vari-Focal Lens Code: GT-CH21D3-28VF
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AHD, HD-CVI, HD-TVI, PAL VANDALPROOF CAMERA GT-CH21D3-28VF - 1080p 2.8 ... 12 mm GEMINI TECHNOLOGY

Net: 32.90 USD  Gross: 40.47 USD

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DESCRIPTION
The product's predecessor was: GEMINI-AH2D-27

Megapixel camera with 1/2.9" Sony CMOS sensor and AHD / HD-CVI / HD-TVI / PAL.

The AHD / HD-CVI / HD-TVI interface allows to transmission of analog video signal via coaxial cable in 1080p resolution. It enables the transmission of HD resolution images for even 500 m distance with keeping the low costs of the installation. During transmission there are no delays and is maintained the original, high quality image.

In the case of video transmission using a twisted pair cable and matching transformers (balun), be aware of the possibility of signal reflections and interfering signals.

Setting the camera in PAL mode allows to obtain an image in 960H resolution. The appropriate signal format selection is done by tilting and holding the joystick for 5 s without entering to the OSD menu. Changing the signal to the NTSC in the camera causes loss of image in connected AHD recorder.

SPECIFICATION
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Standard: AHD, HD-CVI, HD-TVI, PAL
Sensor: 1/2.9 " Sony CMOS IMX322
Digital Image Processor: Nextchip NVP2441H
Matrix size: 2.4 Mpx
Resolution: 1920 x 1080  - 1080p, AHD-H, HD-CVI, HD-TVI ,
960 x 576  - 960H, PAL
Range of IR illumination: 20 m
IR illuminator power adjustment: Automatic
Lens: 2.8  ... 12 mm, 2 Mpx
View angle:
  • 83 ° ... 23 ° (manufacturer data)
  • 93 ° ... 33 ° (our tests result)
  • S/N ratio: > 50 dB
    Video output: Vpp / 75 Ω, AHD / HD-CVI / HD-TVI / PAL - selectable by switch
    Main features:
  • Sense-UP - (Slow Shutter) - Increase the sensor sensitivity max. x 30 
  • D-WDR - Wide Dynamic Range
  • 2D-DNR / 3D-DNR - Digital Noise Reduction
  • F-DNR (Defog) - Reduction of image noise caused by precipitation
  • ICR - Movable InfraRed filter
  • Motion Detection - max. 4 zones
  • Privacy zones - max. 4
  • Day/Night mode (color/b&w/auto)
  • WB - White Balance (ATW/AWB/manual/indoor/outdoor)
  • BLC - configurable Back Light Compensation
  • HSBLC - High Light Compensation (spot)
  • Mirror - Mirror image
  • image "freeze"
  • Sharpness - sharper image outlines
  • Monitor type correction - LCD/CRT
  • OSD menu:
    Application: The camera is designed for indoor use, due to the possibility of steam condensation.
    Power supply: 12 V DC / 240 mA
    Power consumption: ≤ 2.9 W
    Housing: Metal
    Color: White
    Vandal-proof:
    "Index of Protection": IP67
    Operation temp: -10 °C ... 50 °C
    Weight: 0.98 kg
    Dimensions: Ø 148  x 130 mm
    Supported languages: English, Chinese Traditional, Chinese Simplified, French, Spanish, Dutch, German, Polish, Portuguese, Russian, Turkish, Italian
    Manufacturer / Brand: GEMINI TECHNOLOGY
    Guarantee: 2 years
    PRESENTATION
    AHD HD CVI HD TVI PAL VANDALPROOF CAMERA GT CH21D3 28VF 1080p 2 8 12 mm GEMINI TECHNOLOGY

    Camera view after remove the Dome cover - camera lens adjustment knobs are visible: 

    AHD HD CVI HD TVI PAL VANDALPROOF CAMERA GT CH21D3 28VF 1080p 2 8 12 mm GEMINI TECHNOLOGY

     

    AHD HD CVI HD TVI PAL VANDALPROOF CAMERA GT CH21D3 28VF 1080p 2 8 12 mm GEMINI TECHNOLOGY

    Mounting side view: 

    AHD HD CVI HD TVI PAL VANDALPROOF CAMERA GT CH21D3 28VF 1080p 2 8 12 mm GEMINI TECHNOLOGY

    Camera mounting dimensions: 

    AHD HD CVI HD TVI PAL VANDALPROOF CAMERA GT CH21D3 28VF 1080p 2 8 12 mm GEMINI TECHNOLOGY

    The change of the AHD / HD-CVI / HD-TVI / PAL standard is done with the corresponding button by keeping it pressed for approx. 5 seconds, without going into the OSD menu: 

    AHD HD CVI HD TVI PAL VANDALPROOF CAMERA GT CH21D3 28VF 1080p 2 8 12 mm GEMINI TECHNOLOGY

    In the kit: 

    AHD HD CVI HD TVI PAL VANDALPROOF CAMERA GT CH21D3 28VF 1080p 2 8 12 mm GEMINI TECHNOLOGY

    Package: 

    AHD HD CVI HD TVI PAL VANDALPROOF CAMERA GT CH21D3 28VF 1080p 2 8 12 mm GEMINI TECHNOLOGY

    OUR TESTS

    AHD: 

    Camera image at artificial illumination (about 30Lux): 

     

    AHD HD CVI HD TVI PAL VANDALPROOF CAMERA GT CH21D3 28VF 1080p 2 8 12 mm GEMINI TECHNOLOGY

     

    AHD HD CVI HD TVI PAL VANDALPROOF CAMERA GT CH21D3 28VF 1080p 2 8 12 mm GEMINI TECHNOLOGY

    Camera image at night conditions with internal built-in IR illuminator on: 

     

    AHD HD CVI HD TVI PAL VANDALPROOF CAMERA GT CH21D3 28VF 1080p 2 8 12 mm GEMINI TECHNOLOGY

     

    AHD HD CVI HD TVI PAL VANDALPROOF CAMERA GT CH21D3 28VF 1080p 2 8 12 mm GEMINI TECHNOLOGY

    Camera image at direct strong light opposite to camera: 

     

    AHD HD CVI HD TVI PAL VANDALPROOF CAMERA GT CH21D3 28VF 1080p 2 8 12 mm GEMINI TECHNOLOGY

     

    AHD HD CVI HD TVI PAL VANDALPROOF CAMERA GT CH21D3 28VF 1080p 2 8 12 mm GEMINI TECHNOLOGY

    HD-CVI: 

    Camera image at artificial illumination (about 30Lux): 

     

    AHD HD CVI HD TVI PAL VANDALPROOF CAMERA GT CH21D3 28VF 1080p 2 8 12 mm GEMINI TECHNOLOGY

     

    AHD HD CVI HD TVI PAL VANDALPROOF CAMERA GT CH21D3 28VF 1080p 2 8 12 mm GEMINI TECHNOLOGY

    Camera image at night conditions with internal built-in IR illuminator on: 

     

    AHD HD CVI HD TVI PAL VANDALPROOF CAMERA GT CH21D3 28VF 1080p 2 8 12 mm GEMINI TECHNOLOGY

     

    AHD HD CVI HD TVI PAL VANDALPROOF CAMERA GT CH21D3 28VF 1080p 2 8 12 mm GEMINI TECHNOLOGY

    Camera image at direct strong light opposite to camera: 

     

    AHD HD CVI HD TVI PAL VANDALPROOF CAMERA GT CH21D3 28VF 1080p 2 8 12 mm GEMINI TECHNOLOGY

     

    AHD HD CVI HD TVI PAL VANDALPROOF CAMERA GT CH21D3 28VF 1080p 2 8 12 mm GEMINI TECHNOLOGY

    HD-TVI: 

    Camera image at artificial illumination (about 30Lux): 

     

    AHD HD CVI HD TVI PAL VANDALPROOF CAMERA GT CH21D3 28VF 1080p 2 8 12 mm GEMINI TECHNOLOGY

     

    AHD HD CVI HD TVI PAL VANDALPROOF CAMERA GT CH21D3 28VF 1080p 2 8 12 mm GEMINI TECHNOLOGY

    Camera image at night conditions with internal built-in IR illuminator on: 

     

    AHD HD CVI HD TVI PAL VANDALPROOF CAMERA GT CH21D3 28VF 1080p 2 8 12 mm GEMINI TECHNOLOGY

     

    AHD HD CVI HD TVI PAL VANDALPROOF CAMERA GT CH21D3 28VF 1080p 2 8 12 mm GEMINI TECHNOLOGY

    Camera image at direct strong light opposite to camera: 

     

    AHD HD CVI HD TVI PAL VANDALPROOF CAMERA GT CH21D3 28VF 1080p 2 8 12 mm GEMINI TECHNOLOGY

     

    AHD HD CVI HD TVI PAL VANDALPROOF CAMERA GT CH21D3 28VF 1080p 2 8 12 mm GEMINI TECHNOLOGY

    FILES

    Data Sheet


    100 KB

    CE


    250 KB

    User Manual


    300 KB

    OSD menu screenshots EN 


    2 MB

    PACKAGE
    Dimensions (L x W x H): 205x205x200 mmPackage: CartonGross Weight: 1.362 kg

    COMPONENTS OF WORKING WITH: GT-CH21D3-28VF
    SWITCHING ADAPTER 12V/1A/5.5
    12V/1A/5.5
    Net: 3.12 USD

    Net:0.00 USD
    Gross:0.00 USD
    Weight:0.00 kg
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