Yes, it's have a problem. there is false alarm (the vertical angle is too big, detect the ground). Because when a car with full load is the distance between the sensor to the ground at 52-53 cm.
However, Customer are not yet sure which for between 700 or 800 is better.
Ok at the earliest. We have the Back Sensor @800 chrome, but not have @700 chrome.
We will ask for the Back Sensor @700 chrome 2 sets from you or not.