Dahua Dual Imager Dome Camera Tested (HDBW4231FN-E2-M)

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** *** *****, *** Dahua **********-**-* **** ****** dome *** ******* *** positives:

• **** ***********:*** ******'* **** ******* were **** ** ******** due ** ***** **** floating "*******" ******, **** support *** ******** **** to ****** ***** *** shaped *****.
• ******** *** *****/**:*** ***** *********** *** superior ** **** **** imager ****** ** **** tested *** ** ********** IR, *** ***** ** competitors **** ** ****** or *******.
• ***** *** ***********:*** ****** **** **** one ******* *** **** imagers ** ********, *****, Genetec, *********, *** ** Witness, ********** *** *.*** to *** ***** ******, and *.*** ** *******, Milestone, *** ** *******.

*******, ** ******** **** three *** *********, ** well:

• **** ** ********: *** ******* ********** ** brightly *********** *** ****** of *** *****, **** objects ** *** ***** poorly ***********.
• **** *** ***********: *** *********** *** **** against ******** ****** **** light, **** *** ********** and ******* ******** ********** washed ***.
  
• *** ***** ************:*******, ** *** ***** color **** ******* ******* were ******, *** ******* objects **** ** *** test ***** **** *********** at **** ***** *** far ***** ** *** tests. **** ** **** rare/niche **** **********/** ************ but ***** ************ ******* for ***** ** ***** should ******.

***************

*** ****** **********, *** Dahua **** **** ****** dome ** * ***** choice *** ***** ******* to ***** *** ****** or ****** ***** ***** may ******* ******** ****** imager ******, *** ** its **** ***********, ********** IR, *** ***** *** support, ** * ***** competitive ** *** *** cost ** *****, *** requiring **** *** ***** and *** *******.

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*** ***** **-***-**********-**-* ******* ****** for ~$*** ***. **** is ************* ***** **** competitive **** ****** ***** such ** *** *********-******(~$*** ******) *** ******* MicroDome *** (~$*** ******).

**** ******* ** ******* to *** ******* ** domes (********* ~$*** ****), though ******* *** *** licensing ** ******* **** using *** **** ****** camera.

Competitive *******

**** ****** ****** ******* are ***** ********** ****.*******'* ********* ***,******'* ***-******, *******'**** *********** *********. ******* *** Mobotix ******* ******* ******* not ********* ** ***** and ******, **** ** higher *********** (* *** 6 **), ** *********** audio, *** */*. *******, Dahua *** ****** ****** are **** ****** ********* and **** ******** **** brands.

Physical ********

*** ***** **********-**-* ** ******* in **** ** ****** imager *****, **** **** 5" ** ********, **** the **** ********** ***** its *** ***** ***** instead ** *** ****** one. **** *** ** seen ** *** ********** to * ******* ***** single ****** **** *** turret *****:

**** ****** ** ************** on * **** ***** an "*******" ***** ******. Camera ****** *** *****, with ** ********* ******* and ** ***** ******* aside **** *.*** (***° AOV) ** ***** *******. A ******** **°/*.*** ****** is ********* ** ***** regions.

***** ** ****** *** camera's ******** ********.

Open ****** *******

** ****** *** ****** in ** **** ****** area ~**' ****, **** both ******* ******* ******** of **** *****, **** the ****** ****** **** of ****** ** *** open ****** ****, ******* the *** **** *****.

**** ************* ******* **** sides ** *** **** office ****, **** **** exposure **********. *******, ***** is * ******* ***** spot ******** ***** *** camera (** *** ****** of *** ***** ****), which ***** *** **** to ***** **** * separate ****** ** *******.

Entry ****/******* *******

****, ** ****** *** camera ******** ** ***** vestibule ** **** ** a ********* *******, **** one ****** *** ** in ******** **** ****** fit *** *******. ** this *****, ******** *** even, **** *** ******* fully *******, ********* *** area ******** ***** *** camera. *** ****** ***** toward *** **** **** tightly ******* *** ***** and ***** **** ****.

Image ******* **********

******** ** * ******** 1080p ***** ****, *** dual ****** **** ******** similar ******/***** ******* ** near *****, **** **** slight ************ ** *** subjects **** ** ~* klux.

** ***** ** ***/~**', performance *** ***** *******, but ****** ******* ************* reduced ** **** *******, with **** ***** ******* visible. ****** **** *****, detection ** ****** ********, but ************** ** *** possible.

Dark ***** ******* (

** **** ****** **** IR **, ******* *** strong ** ***** ***** (~10'/~70 ***) ** *** dual ****** ******, *** slightly **** ** *** single ****** ****, **** better ***** ********** ** the **** ****** **** (line * **. **** 5)

******** *** ******** ** ~20' (~** ***), **** facial ******* *** ***** available ** *** ********** ***** they *** **** ** the ****** ****** ******.

Poor ** ********

** ******** ** *** HDBW4231FN *** ****, ******** illuminating *** ****** ** the ***** ***** ******* the ***** ****, *********** reducing ******* ** *** subject *** *****.

************, ** *** **** imager ******'* ********* ** range (***/~**'), ************ ** weak, ****** ********* ** possible. ** ********, *** single ****** ***** **** not ******* ******* ** the ******* ** **** range.

Low ***** ***** *******

*******, ** *** ***** (~2 ***) *** ****** into ***** ****, *********** was ********** ****** ** the **** ****** ******, with ******* ******** ******* in *** ****** ****** dome, ****** **** ******* overexpose **** ** *** test *****.

WDR ***********

*** *** ****** ** a ********* ******* **** an ******** ****, **** lux ******* ********** *** due ** ***** ***** ~1,200 ***, **. ~** inside.

**** ******* ********* ********* in **** ********, **** facial ******* ********** ***********, though *******, ******* ******* backlight, *** ******* ******* in *** ****** **** beside *** ****.

*********

********* ** *** *** Dahua **** ****** *** similar ** *** ****** imager ****** ****** *** day, *** ********** ****** at *****. ******** **** comparable ** ******'* ***-****** dual ****** ******, ****** note **** ***** ******** integrated **, ***** ****** does ***. ************ **** taken **** ******** ****** in *** *****, **** smart ****** **.

Broad *** ***********

*** ******* *** *** HDBW4231FN *** *****, **** both ******* ********** *** streaming *** *.*** ** all ***** ******. *******, H.265 ********* *** *** supported ** ******** ** Exacq. ****** *** ****** in *** ***** ****** Avigilon. *** ***** ****** used **** **** ******* license *** **** *******.

Versions ****

*** ********* ******** ******** were **** ****** *******:

• **********: *.***.*******.**.*

*** ********** ** **** in *****.