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Update sdm_meter.rst

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components/sensor/sdm_meter.rst
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@ -19,7 +19,8 @@ with ESPHome.
The communication with this integration is done over a :ref:`UART bus <uart>` using the :ref:`Modbus protocol <modbus>`
over RS485 wiring. You will need an RS485 to UART converter for communication.
You must therefore have a ``uart:`` entry in your configuration with both the TX and RX pins set
to some pins on your board and the baud rate set to 9600.
to some pins on your board and the baud rate set to 9600 bps.
! For the SDM230M Energy Monitor the default factory baud rate is 2400 bps.
.. code-block:: yaml