This is simply incorrectly copied code.
As you can see, the sensor is working on the graph, the syntax in the config is correct.
But random voltage and power readings are displayed.
Thanks for trying to help.
I changed the pin on the RX.
In general, the problem is that with the load off, from Sonoff
I get weird data like on a chart.
But when you turn on the load, everything is in order. Shows the correct voltage and power.
Probably need to adjust the filtering of these random bursts?