Originally Posted by thebishman
So the BMW specific vertical sensor is a normal powered version, just with a different orientation of the emitter.
Do you think one of the HP emitters would work centred over the license plate?
The problem with using one sensor is reception range. The Lidar is a very large circle. I they aim for the outside tail light, the centrally mounted sensor may not pick it up. Especially at close range when the Lidar beam has a smaller coverage area.
Rear shots are always at close range because you just passed the cop. So it is generally better to have 2 on the back.