Anyone else considered or actually fitted this after market parking sensor?

Appeals as it does not involve any drilling for the round sensors in bumpers, and the metallic strip sensor simply sticks to the inside of the rear bumper.

Wondering if there is a catch?

Hi there - My parents have the same on thier Honda Civic and it seems to work fine, picking up objects at both the rear and side of the car. They have had to have two fitted though as the first one didn't work properly!