Title: 155 Proximity Sensor: A New Choice for Speed Monitoring In the field of modern technology, the application of sensors plays an increasingly important role. Among them, the 155 proximity sensor stands out with its unique advantages and becomes a new choice for speed monitoring. The 155 proximity sensor is designed to be highly sensitive and can accurately detect the distance between objects in a short period. This feature makes it particularly suitable for speed monitoring tasks. Whether it is used for vehicle speed monitoring or industrial production line speed control, it can provide accurate and reliable data support. Its working principle is based on the use of infrared or ultrasonic signals to measure the distance between the sensor and the object being monitored. When an object approaches, the signal reflected by the object changes, and the sensor can calculate the speed of the object based on this change. This non-contact measurement method not only improves measurement accuracy but also avoids potential damage that may be caused by contact measurement. In practical applications, the 155 proximity sensor has shown excellent performance. For example, in vehicle speed monitoring, it can be installed on roadsides or traffic sign poles to monitor the speed of passing vehicles in real time. Once the vehicle exceeds the speed limit, the system can promptly issue a warning or take other measures, effectively improving road traffic safety. In addition, the 155 proximity sensor also has the advantages of small size, easy installation, and low maintenance cost. It can be quickly deployed in various environments, providing users with great convenience. In summary, as a highly precise and reliable sensor, the 155 proximity sensor has unique advantages in speed monitoring applications. With the continuous development of technology, it is believed that it will play a greater role in more fields in the future.