How to list all sensors with state = 'unavailable', 'none' or 'unknown'

boneheadfraggle · December 12, 2019, 8:55pm

Thanks so much! Now it works like a charm.

For others reading and wanting the same thing:

The sensor:

    unavailable:
      friendly_name: 'Sensors that need attention'
      value_template: >
        {{ states | selectattr('state', 'in', ['unavailable', 'unknown', 'none']) | list | length }}
      attribute_templates:
        entities: >
          {{ states | selectattr('state', 'in', ['unavailable', 'unknown', 'none']) | map(attribute='entity_id') | list | join('\n') }}

…and the automation that updates the sensor:

alias: "System - Refresh sensor.unavailable"
trigger:
  platform: time_pattern
  minutes: '/1'
action:
  service: homeassistant.update_entity
  data:
    entity_id: sensor.unavailable