The SY-LD01 Loop Detector is an efficient and reliable solution for your parking boom barrier needs. It is a high-performance loop detector designed to detect vehicles passing through openings to control access. It is easy to install and use, and features adjustable sensitivity settings to detect vehicles of various sizes. The built-in LED indicators provide an easy way to monitor the loop detector's status. This loop detector is an ideal choice for parking lots, toll booths, and other access control applications.