Laser injection Angle:
The Angle of 45 degrees to recommend, 30 degrees Angle for alert, alert Angle is why? Because when injection Angle is less than 30 degrees, Angle is too small, laser near after direct owner's eyes, and will affect the driving after the owners, in the traffic regulations is not allowed.
When the injection Angle of 45 degrees to 30 degrees, shoot the laser beam on the ground the distance from the car is about 3 ~ 5 meters, the width of the length of the laser beam is about a car.
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