YH-DLS2 Data Logger is a specialized portable detection device used for evaluating the effectiveness of cathodic protection and stray current interference detection. It is a simple and easy-to-use inspection tool that assists pipeline operators in the daily operation and management of pipeline cathodic protection. Testing personnel can obtain the testing station number with just one click through the APP, conduct testing with just one click, and upload the testing data to the cloud with just one click. Cathodic protection management personnel can obtain the effectiveness of pipeline cathodic protection and stray current interference status through the cloud backend, assisting managers in timely discovering and eliminating safety hazards in pipelines. The equipment is equipped with rich software, which not only allows for direct viewing of data on the APP, but also uploads detection data to the cloud, where data can be viewed, analyzed, and exported through a web interface.