Allowed device_class for "Number"

Development
1

Hello,

I am developing some mqtt auto-discovery.
I have some data, that I would like to pass, that is a plain number and does not fit into the existing device_classes (e.g. a pure counter, some valve-setting in percent, …).

I create my payload

      device_class="None"  
      entity_type="number"  
      unit_of_measurement="None"
    config_topic = f"{device_name}_{entity_type}_{entity_name}"
    config_payload = {
        "device_class": device_class,
        "name": entity_name,
        "unit_of_measurement": unit_of_measurement,
        }

The docs say:

A full list of available number device classes is below:

  • None: Generic number. This is the default and doesn’t need to be set.

Still, I get an error:

2024-01-22 23:22:22.202 ERROR (MainThread) [homeassistant.components.mqtt.mixins] Error ‘expected NumberDeviceClass or one of ‘apparent_power’, ‘aqi’, …, ‘wind_speed’ for dictionary value @ data[‘device_class’]’ when processing MQTT discovery message topic: ‘homeassistant/number/UVR_TADesigner_number_solstart_z_hler_startversuche/config’, message: ‘{‘device_class’: ‘None’, ‘name’: ‘solstart_z_hler_startversuche’, ‘state_topic’: ‘homeassistant/number/UVR_TADesigner/state’, ‘unit_of_measurement’: ‘None’, ‘value_template’: ‘{{ value_json.solstart_z_hler_startversuche}}’, ‘unique_id’: ‘uvr_tadesigner_number_solstart_z_hler_startversuchexxxzzzaaa’, ‘device’: {‘identifiers’: [‘uvr_tadesignerxxxzzzaaa’], ‘name’: ‘Uvr_tadesigner’}, ‘platform’: ‘mqtt’}’

What am I doing wrong?

Thanks in advance,
Hendrik

2

Did you try not setting the device class?
“None” is a string, if you MUST set the deviceclass, try null instead (again NOT in quotes).

3

None of device_class nor unit_of_measurement are mandatory in the payload of the MQTT discovery topic. If you don’t use them, just do not send them, but "None" is surely wrong as said above.

4

Thank you. Not providing it did solve my issue.

Greetings,
Hendrik