Growatt 7000MTL-S - Communication and Setup Configuration

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1. when ‘RS232’ is selected, you have to set PIN1 of the switch downward to OFF.
2. When ‘Exter wireless’ is selected, you have to set PIN1 of the switch upward to
ON.
7.3 Communications
7.3.1 RS232 (standard)
RS232 could be chosen for GPRS,WiFi Module.
7.3.2 WIFI(Optional)
WIFI,GPRS module can be used as an optional monitoring scheme.