IPC-HDW2231R-ZS Starlight cameras IR wavelength???

[Nick70068]

I couldn't find any information on the IR wavelength for the IPC-HDW2231R-ZS Starlight cameras. Not sure if it is 850nm and 940nm. I am thinking it is 850nm since I can see the red glow of the IR LED when it is on.

Any information is greatly appreciated.
Nick

 

[bigredfish]

Its 850nm

 

[Nick70068]

Thank you! That is what I suspected.

 

[StratRider]

I am having difficulty finding this information on a lot of the cameras. Starting to assume that if they don't post it in the specs, then it is 850nm.
This is starting to make me wonder if anyone sees a real world problem with being able to see the red glow of an 850nm?
I am wanting to get 2 cams for LPR and place them in a precarious position by the street and I do NOT want the kids that walk out there to be able to see that glow.
This appears to now rule out the ones I had previously chosen. :-(

 

[bigredfish]

Most all surveillance cameras use 850nm. Those that use 940nm shine about 1/2 of the 850nm. Dont overthink it.

 

[sebastiantombs]

You can use 940nm but it will take a higher powered illuminator to get the same results as an 850nm, roughly double the power rating as a rule of thumb.

Another trick is to mount the illuminators separately from the cameras.

 

[StratRider]

The location of the cams would be right at the street and only about 7 ft high to get a great angle for LPR.
But the teenagers walking by won't see the cams unless there is the red glow - and then they would likely be destroyed.
Solution now would be to turn off the LED's and put an 850nm illuminator away from the cams or a 940nm close to the cams.
The distance to the plate will only be about 20 meters, so power shouldn't be an issue.
I had been searching forums since my first post and couldn't conclude that a 940nm illuminator will work with a standard 850nm cam though.
Thanks for the input.

 

[bigredfish]

Gonna have to choose one or the other I believe.

if they can see the camera, not sure seeing the LED"s will make much difference. Its not like a flashing stop light, they are very dim and only seen looking straight on

 

[looney2ns]

I suggest you go to the LPR subject area and start studying what others have done.
This cam could be mounted further away from the road and still catch plates.
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