Due to the recent upgrade of LINE official TLS that allows only version 1.2. or later to work, it may cause the LINE Notify message sending function of PMC-523x, PMC-224x, PMD power meter concentrators fail to work.

To fix this problem, you will need to update the OS and firmware of the controller. Please follow the instructions in the following manual to update the OS and firmware in sequence to eliminate the problem.

Sorry for any inconvenience caused.