1. Gear teeth count: The sensor can detect the number of teeth on a gear accurately, making it suitable for applications such as gear manufacturing or assembly.

2. Processing-based metal component difference check:
The sensor can detect even subtle differences in the surface finish of metal components during processing, allowing for quality control and process optimization.

3. LED lighting check:
The sensor can check the brightness and color of LED lighting, ensuring that it meets the required specifications.

4. Cap tightening check:
The sensor can check the tightness of caps on bottles or containers, ensuring that they are correctly tightened and preventing leaks.