Whilst our non-BMW Sensors are optimal mounted horizontally, our new BMW Editions are optimal when mounted vertically as we rotate the diode inside the BMW Sensor 90º allowing the diode's emitted shaped beam to remain horizontal across the roadway from left to right. The whole idea behind the BMW Sensor was to allow BMW users, whose kidney grill precludes them from the ideal mounting location next to the headlight with a horizontal sensor, to do so otherwise they only choice was the less effective location down low in the bumper.
Dual - Recommended for small to medium vehicles for front protection.
Triple - Recommended for medium to large vehicles for front protection.
Quad - Recommended for small to medium vehicles for front and rear protection.