: These involve fixed or auto-baud rate switching for simple data transmissions.
While newer wireless technologies like NB-IoT and LoRaWAN are popular for remote reading, IEC 62056-21 remains indispensable for three reasons: CEI IEC 62056-21
The CEI IEC 62056-21 Standard: Powering Local Meter Data Exchange : These involve fixed or auto-baud rate switching
: Millions of meters currently in service rely exclusively on this protocol. CEI IEC 62056-21