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Yes, the external module VIO need to be connected. For details please download the application note VVIO12A_EN_M_C001.
WEB link: https://www.se.com/ww/en/download/document/P3_EN_AN_xxxx/
WEB link: https://www.se.com/ww/en/download/document/P3_EN_AN_xxxx/
Released for:Schneider Electric Vietnam
