Due to the system compatibility issue, the "Add LINE Notify chat room" function of PMC-523x, PMC-224x and PMD IIoT Power Meter Concentrator fail to work recently.

To fix this problem, the concentrator firmware must be updated to v3.6.5 or later version. Please go to https://pmms.icpdas.com/en/download.html#firm_ware to download the latest version of PMC/PMD firmware, and follow the instructions of PMC-523x /PMC-224x /PMD Series User Manual to update the firmware to fix the problem. Sorry for any inconvenience caused.