Hass Template sensor for average T/H

template.yaml

template:
  - sensor:
    - name: "Average temperature"
      unique_id: avrg_temperature
      unit_of_measurement: "°C"
      state: >
        {% set bedroom = states('sensor.anbang_t_h_temperature') | float %}
        {% set kitchen = states('sensor.kitchen_temperature') | float %}
        {% set living = states('sensor.geosil_temperature') | float %}

        {{ ((bedroom + kitchen + living) / 3) | round(1, default=0) }}
    - name: "Average humidity"
      unique_id: avrg_humidity
      unit_of_measurement: "%"
      state: >
        {% set bedroom = states('sensor.anbang_t_h_humidity') | float %}
        {% set kitchen = states('sensor.kitchen_humidity') | float %}
        {% set living = states('sensor.geosil_humidity') | float %}

        {{ ((bedroom + kitchen + living) / 3) | round(1, default=0) }}