Danfoss Ally TRV send external temperature (zigbee2mqtt)

danfoss_trv_ext_temp_z2m.yaml

blueprint:
  domain: automation
  name: Danfoss Ally Ext Temp Z2M
  description: Update Danfoss Ally TRV external temperature with min/max refresh rate, via zigbee2mqtt
  input:
    ally_device:
      name: Ally TRV Device
      description: Temperature reading will be sent to this device
      selector:
        device:
          manufacturer: Danfoss
          entity:
            domain: climate
    temp_sensor_id:
      name: Temperature Sensor
      description: External sensor from which the temperature will be read. Expects data format 12.3
      selector:
        entity:
          domain: sensor
          device_class: temperature
    max_update_timer_id:
      name: Timer entity
      description: >
        Timer that will trigger at maximum update interval
        if source sensor has not changed.
        Sets automatically to 30min for covered, 3h for uncovered
        Use separate timer for each automation.
      selector:
        entity:
          domain: timer
variables:
  device: !input ally_device
  temp_sensor_id: !input temp_sensor_id
  radiator_covered_state: >
    {{ states(
    device_entities(device)
    |select('match', '.*radiator_covered$')|first) }}
  min_update_minutes: >
    {% if radiator_covered_state == 'off' %}
      30
    {% else %}
      5
    {% endif %}
  max_update_minutes: >
    {% if radiator_covered_state == 'off' %}
      180
    {% else %}
      30
    {% endif %}
trigger:
- platform: state
  entity_id: !input temp_sensor_id
- platform: event
  event_type: timer.finished
  event_data:
    entity_id: !input max_update_timer_id
condition:
- condition: template
  value_template: >
    {{ as_timestamp(now())
    - as_timestamp(state_attr(this.entity_id,'last_triggered'),0)
    > 60 * min_update_minutes }}
action:
- service: mqtt.publish
  data:
    topic: "zigbee2mqtt/{{ device_attr(device, 'name') }}/set/external_measured_room_sensor"
    payload: "{{ (states(temp_sensor_id) | float * 100) | round(0) }}"
- service: timer.start
  target:
    entity_id: !input max_update_timer_id
  data:
    duration: "{{ max_update_minutes * 60 }}"
mode: single

Updated version of https://gist.github.com/bnapalm/eab265100029aa7f035ad29ef89708df for Home-Assistant 2025.2.0.