z2m_aqara_trv_external_temperature.yaml

z2m_aqara_trv_external_temperature.yaml

blueprint:
  name: Aqara TRV E1 External Temperature Control
  description: >
    This automation allows the Aqara TRV E1 Smart Radiator Thermostat to use temperature readings from an external sensor rather than its internal sensor. Whenever the temperature sensor reports a new value, it is sent to the TRV for more accurate climate control.
  domain: automation
  source_url: "https://gist.github.com/pavax/8d6ed250765d89cb281d4a1762b8d2e8"

  input:
    external_temp_sensor:
      name: External Temperature Sensor
      description: Select the temperature sensor that will provide temperature readings to the Aqara TRV.
      selector:
        entity:
          filter:
            domain: sensor
            device_class:
              - temperature

    aqara_trv_device:
      name: Aqara TRV Device
      description: Select the Aqara Smart Radiator Thermostat E1 that will receive the external temperature data.
      selector:
        device:
          multiple: false
          filter:
            - integration: mqtt
              manufacturer: Aqara
              model: Smart radiator thermostat E1 (SRTS-A01)
            - integration: mqtt
              manufacturer: Aqara
              model: Aqara Smart Radiator Thermostat E1 (SRTS-A01)

    external_temperature_input_name:
      name: TRV's Input Sensor Name
      description: Enter a keyword or name used to identify the TRV’s number sensor entity-id, which sets the external temperature value. Defaults to 'external'.
      selector:
        text:
      default: "external"

mode: single
max_exceeded: silent

variables:
  aqara_trv_device: !input aqara_trv_device
  external_temp_sensor: !input external_temp_sensor
  external_temperature_input_name: !input external_temperature_input_name
  aqara_trv_sensor_mode_value_external: "external"

trigger:
  - trigger: state
    entity_id: !input external_temp_sensor

action:
  - variables:
      aqara_trv_device_name: "{{ device_attr(aqara_trv_device, 'name') }}"
      aqara_trv_select_entity: >-
        {% set device_entities = device_entities(aqara_trv_device) %}
        {{ expand(states['select'])   
                  | selectattr('entity_id','in', device_entities)
                  | selectattr('attributes.options', 'contains', aqara_trv_sensor_mode_value_external)
                  | map(attribute='entity_id') 
                  | first
        }}
      aqara_trv_number_entity: >-
        {% set device_entities = device_entities(aqara_trv_device) %}
        {{ expand(states['number'])   
                  | selectattr('entity_id','in', device_entities)
                  | selectattr('entity_id', 'contains', external_temperature_input_name)
                  | map(attribute='entity_id') 
                  | first
        }}

  - if:
      - condition: template
        value_template: "{{ not is_state(aqara_trv_select_entity, aqara_trv_sensor_mode_value_external)}}"
    then:
      - action: select.select_option
        target:
          entity_id: "{{aqara_trv_select_entity}}"
        data:
          option: external
      - delay:
          hours: 0
          minutes: 0
          seconds: 10
          milliseconds: 0

  - action: number.set_value
    data:
      value: >-
        {{ (states(external_temp_sensor)|float(0)|round(1)) }}
    target:
      entity_id: "{{aqara_trv_number_entity}}"

I suggest simplifying the code in the part where it interacts with the MQTT service. The integration offers easy access to setting the temperature through number.set_value.

action: number.set_value
metadata: {}
data:
  value: "{{ (states('sensor.sredniaia_temperatura_v_spalne')|float(0)|round(1)) }}"
target:
  entity_id: number.0x54ef4410005bae34_external_temperature_input

@almirus Thanks for your suggestion. I updated the script to be based on your suggestion. Can you try it and provide me with some feedback?

@fabibo89 I updated the blueprint to allow you also to fetch a Device with the name "Aqara Smart Radiator Thermostat E1 (SRTS-A01)"

Hello! Please update to "Smart radiator thermostat E1 (SRTS-A01)" whith small "t"
Thanks

@chEEzys thanks - I updated the blueprint