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Thank you for your reply, That was really useful but regarding some points I need to ask again:

Actually I need a range like 200 meters or even less.

Please explaine it more, How do these laser...

Is there any sensor to detect the police laser beem? As you said if the aime dlaser beem diameter is 18' then do all the cars in its access get the beem and sense it?(which I like it to happen) ....

Hi there, Thank you for caring and reply but I think there is sth. wrong and I couldn't explain my aim well so we are not in the same way let me explain it more:
I'm not gonna hide me vehilce...

Hi every body,
Please kindle advise me about this problem:
Does a laser detector need to directy pointed at to detect the beem? Where it is installed in a vehicle? If the police aim the beem to an...