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Comparison Dahua DH-HAC-HFW1220SLP vs Dahua DH-HAC-HFW1220SP-S3

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Dahua DH-HAC-HFW1220SLP
Dahua DH-HAC-HFW1220SP-S3
Dahua DH-HAC-HFW1220SLPDahua DH-HAC-HFW1220SP-S3
from $32.60 up to $46.00
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from $38.71 up to $50.40
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Mountoutdooroutdoor
Body typebeamedbeamed
Connection
BNC
BNC
Camera features
Design and features
light sensor
IR illumination
light sensor
IR illumination
Number of LEDs1818
Illumination range30 m30 m
Matrix
Matrix typeCMOSCMOS
Matrix size1/2.9"1/2.9"
Number of megapixels2 MP2 MP
Video resolution1920x1080 px1920x1080 px
Frame rate25 fps25 fps
Minimum illumination0.02 lux0.02 lux
Aperturef/2.0f/2.0
Signal to noise ratio65 dB65 dB
Backlight compensationDWDR+BLCDWDR+BLC
Lens
Focal typepermanentpermanent
Focal length3.6 mm
3.6 mm /2.8, 6mm (option)/
Horizontal viewing angle82 °82.8 °
General
Power source
12 В /maximum consumption — 3.9 W/
12 В /maximum consumption — 3.9 W/
Operating temperature-40 °C ~ +60 °С-40 °C ~ +60 °С
Maximum humidity95 %90 %
Protection levelIP67IP67
Materialplasticmetal
Dimensions70x70x161 mm164.7x70x71.6 mm
Weight220 g340 g
Color
Added to E-Catalogmarch 2017march 2017

Horizontal viewing angle

Horizontal viewing angle of the surveillance camera. For models with a variable value, the maximum value is indicated, since it is the width of the image that is important, and when zooming in, the zoom factor is more important than the angle. This paragraph also indicates the general angle of view for models with a circular field of view – in particular, cameras with a fisheye lens (see above)

The wider the viewing angle, the more space the camera captures and at the same time, the smaller the images of individual objects in the frame are obtained. Therefore, when choosing by this parameter, it is worth deciding what is more important – the ability to view a large scene or the visibility of small details in a relatively narrow field of view. Also note that with a wide field of view (100° or more), characteristic distortions can be observed at the edges of the frame, and the wider the angle, the more pronounced they are. This phenomenon can be eliminated by panoramic shooting (see "Design and features"), but this feature, in turn, complicates and increases the cost of the camera.

Maximum humidity

The highest relative humidity at which the camera is able to operate normally, without failures and breakdowns, for an unlimited time.

Modern electronics tolerate low humidity well, but high rates affect it negatively — with a long stay in such an atmosphere, moisture can condense on certain parts of the structure and various unpleasant consequences, from corrosion to short circuits and fires. Therefore, you can use the camera effectively and safely only in conditions where the humidity does not exceed the maximum recommended value specified in the specifications. At the same time, we note that many devices are able to endure short-term (up to several hours) exposure to high humidity without consequences.

Material

The main material used in the construction of the camera body.

— Plastic. Inexpensive and at the same time quite practical material. Plastic is light, quite strong (not as strong as metal, but still quite sufficient for most cases), chemically inert (and therefore not susceptible to corrosion and insensitive to moisture), and also has a relatively low thermal conductivity (which provides additional protection for extreme temperature fluctuations). Due to all this, this material is very popular in indoor chambers (see "Usage"). At the same time, it is somewhat less suitable for outdoor work.

— Metal. The main advantage of metal, in comparison with plastic, in the case of surveillance cameras is high strength and reliability. This allows you to use it even for street models that work in difficult conditions and must have a certain anti-vandal resistance (at least not immediately “give up” when trying to break or break). At the same time, such material is much more expensive, and therefore less common.
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