This 4x Black Parking Sensors Car Auto Reverse Backup Rear Radar LED Alert System Kit is a reliable and convenient solution for enhancing visibility when parking your car. The screw-in mounting style and universal fitment make it easy to install on both the rear and front of your vehicle. The radar sensor detects objects at a range of 0-2.5m with an ultrasonic frequency of 40KHz, providing accurate and efficient assistance. With a compact sensor size and included mounting hardware, this kit offers advanced driver assistance for a safer parking experience.