What communication options does the Norax 3 meter support?
The Norax 3 supports multiple communication methods including an optical port, an optional serial port RS-485, and optional Wireless M-Bus at 868 MHz (EN 13757). It also uses the DLMS/COSEM communication protocol. (Page 1-2)
From the official Apator HM8930 7197 Norax 3 Electricity Meter manual, page 1
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