template sensor

template:
  sensor:
    - name: "Sensori3"
    unique_id: sensori3_uniikki_id
    unit_of_measurement: "€"  # optionaalinen
    icon: mdi:currency-eur      # optionaalinen
    state: >
      {% set sensor1 = states('sensor.sensori1') | float %}
      {% set sensor2 = states('sensor.sensori2') | float %}
      {{ (sensor1 - sensor2) | round(3, default=0) }}