Thank you very much for viewing. This is an auction for the Yupiteru Forward Collision Warning Sensor FCW-L1. This device is a convenient product that attaches to the upper part of the windshield inside the car and alerts you to the distance to the vehicle in front, its approach, and its departure. This feature is standard equipment in recent cars. I used to have it installed in the car I use for work, and it was excellent. It prevents rear-end collisions and also alerts you with a beep if the car in front moves away, preventing you from being caught off guard by falling asleep or being embarrassed. It makes driving much easier. Many commercial vehicles still don't have this function, so you can easily install this by sticking it on and plugging it into the cigarette lighter. It's easy to install and provides peace of mind. I highly recommend this sensor. The settings for the distance at which the sensor reacts to the car in front have already been configured. However, since I used it in a passenger car, those planning to install it in a wagon or those who want to set it up themselves should read the manual. It's a convenient device that will help you out. I had kept it, thinking I might use it again, but I'm selling it to organize my room. Thank you for your consideration. The mounting tape is a new, dedicated clear double-sided tape, so you can use it right away!