The AMT/FSL-JYBH cathodic protection monitor is an automatic on-site corrosion monitoring instrument designed to measure potential and current. It directly monitors the potential difference between the protected object and the reference electrode to determine the scope and effectiveness of cathodic protection. It utilizes a precise Hall sensor to measure the output current of the sacrificial anode or rectifier (i.e., cathodic protection current). Ultimately, the monitoring status and effectiveness of cathodic protection are evaluated based on the protection potential and output current.The instrument can communicate with a computer, supports RS485 communication, and can also use the wireless data transceiver for remote measurement and control. It can directly transmit cathodic protection monitoring data to a remote monitoring center, and through data management and analysis software, it can be used for real-time online monitoring of cathodic protection status.