Ah thanks for the reply, I wish i didnt impulse buy one to test (just one camera. Whoops. I got caught by the whole colour night vision thing and pretty flashy lights. Oh well I guess i could use just that one later somewhere bright maybe? I like to tinker with my automation so i guess i'll use it as a learning device. Glad I didn't buy 8 of them lol. Thanks for the warning.
Are there poe devices that can act as the deterence and be triggered by those cams you talked about? I won't be spending big money for quite some time so I'm trying to do as much research as possible. I'm installing a variety of zigbee 100w led floodlights mainly for me to see at night as I'm a nightowl n work in the garden but also I'd like to have them turn on just as a deterence hopefully. I've seen some 150db 12v sirens too but I don't wanna go overboard.
Lots of things...
First - I understand that YouTube videos showing cameras demos with active deterrence function sells that cams very easy.
But reality is different - even modern cams with modern AI capabilities have 97-99% accuracy with proper detecting / filtering people / cars.. There are missing events, there are false positives.. that 1-3% can means that a few times per week You will receive siren signal at false positive (some moving trees etc).. it can be a problem at night with Your neighbors.
for almost 100% accuracy You need good dual tech PIR + MW motion sensors or IR barriers around house.. sorry...
You can limit that cams to only turn on white light. But this (automatically switched on white light) does not deter burglars at all. everyone everywhere are using motion activated lights...
We use cams with AI perimeter protection to have motion events sent to mobiles and have possibility to easy search people/car events around house in video footage history. This works very well.
But I never would connect alarm-out connector from NVR to my alarm system without some clever solutions to filter that 1-3% of false positives.
The number plate thing I read I think on wizmind probably and misunderstood it for wizsense. I was probably looking at that massive ptz 7grand super zoom camera. Sorry for the misunderstanding. Is it possible to do? I saw some videos a while ago and thought it was a feature.
ANPR function is limited to ultra line cams (like IPC-HFW7442H-Z4-X) and some dedicated ANPR cams.. I don't known any Dahua PTZ cam with that function.
You can add ANPR to any camera (even PTZ) by using WizMind Ultra line NVR's (5xxx-XI, 6xx-XI).
It's a bit disappointed the ai facial recognition is limited to 2 channels. Was hoping the tech was more advanced I guess.
No it isn't.. It is simply limitation of specified by You NVR.
You want to have IVS + Face recognition/detection.
Cams supports one AI function at time - so You choose IVS.
This NVR from 5xxx-EI line (this is WizSense not WizMind line) have limited local AI power - can add 8 SMD / 4 IVS or 2 face reg/det channels done locally on NVR (not cams).
You can enable face recognition on cam (losing IVS) and then run second part (face detection) on this NVR - in this scenario this will work max to 16 Chanels on that model.
If You want more, there are higher NVR models from WizMind line (5xxx-XI, 6xx-XI) which have much higher local AI power capabilities / limits.
PS. Face detection / recognition requires very specific cams mouting locations in front of entering people - face must be optically zoomed to bigger size.
Better function for house / SMB market is AcuPick (now AcuPick 2.0 with Video Metadata attributes) which allows You to search for the same looking people / cars simply by clicking on them from other cams / past footage. And also to search for people matching specified attributes (height, clothes color, age, hats/glasses etc)..
New 5xxx-S3 cams with 5xxx-EI NVR supports those functions - in latest freshly releasesd firmware. And they work with IVS, which is for perimeter protection.
I thank you for your advice, it's truly helpful. So say you wanted about 8 cams, would the DH-IPC-HDW5442TMP-ASE-0280B Dahua AI 4MP Starlight+ IP Turret Fixed IR 50m POE be the one to go for? And what nvr 16 channel would you use?
Do you know of a varifocal ptz that would be ok to use?
Thanks so much for the info, some of the dahua stuff is confusing.
First You must understand that there are different models of 5442 with different lens options (fixed, zoomed).
And choosing proper one is very important to have good installation.
You choose model with fixed 2.8mm lens - which provide very wide Field of view (>100 degree horizontal) - something like WIDE settings in smartphone foto apps. But with this field of view everything at distance (like 10 meter or more) is small on video image - wide lens compresses object at distance..
there are 5442 with varifocal lenses - in 1-3x zoom range (short distances) and 3-9x zoom range (long distances)..
There is a lot of reading about focal length, You can start at:
At the urging of several folks here, I created a thread to show the importance of focal length and how focal length can be more important than megapixels (MP). I mentioned some of this in the post regarding The Hookup’s latest video demonstrating different cameras, including one sold from a...
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