Zemismart SPM01-D2TW-ZM - LocalTuya integration - Entity Energy without 'state class'

[franknap]

Hi everyone, I have a Zemismart SPM01-D2TW-ZM Wifi smart meter and a LocalTuya integration to read its values. However, I realized that it is not possible to use the Energy variable for statistics and for the energy dashboard, since the aforementioned variable does not have the 'state class’ attribute.

I also tried to edit via the ‘Developer tools’ page by modifying the ‘State attributes’ by inserting the new attribute. At the end of the operation I can see the new attribute in the sensor properties, but after a few second after SET STATE losing changes.

Does anyone know how to do it?

[JohnFLoki]

You can add the state attribute through customize.yaml

[franknap]

thank you for your reply, in the end I had already found a solution by creating a template sensor, this also allowed me to manage the raw values ​​and the necessary approximations with greater precision.

#Legacy template sensor format does not support measurement state_class*
*template:

- sensor:
      - name: "SPM01 Energy total"
        unit_of_measurement: "kWh"
        device_class: energy
        state_class: total_increasing
        state: >-
          {{ states('sensor.energy_total')|float * 1.000}}

  - sensor:
      - name: "SPM01 Current"
        unit_of_measurement: "A"
        device_class: current
        state: >-
          {{ states('sensor.current')|float * 0.001}}

  - sensor:
      - name: "SPM01 Power"
        unit_of_measurement: "kW"
        device_class: power
        state: >-
          {{ states('sensor.power')|float * 0.001}}

  - sensor:
      - name: "SPM01 Frequency"
        unit_of_measurement: "Hz"
        device_class: frequency
        state: >-
          {{ states('sensor.frequency')|float }}

  - sensor:
      - name: "SPM01 Voltage"
        unit_of_measurement: "V"
        device_class: voltage
        state: >-
          {{ states('sensor.voltage')|float }}