Where are my filter sensors?

Configuration
1

I am attempting to utilize the filter template. Other than tripping over the need to delineate filter sensors from template sensors (the example code in the filter// help file does not just drop in and work without understanding this delineation), I am now struggling with locating the new sensor.

So it now compiles and I see no glaring errors in the log regarding ‘filter’, but I do not find anywhere (Dev Tools / states), Entities, etc. any reference to the new sensor. I was led to believe that the filter sensor entity is referenced by its name.

I must be doing something wrong. Here are the config.yaml entries:

      hot_tub_temp:
        friendly_name: Hot Tub Temp
        unit_of_measurement: '°F'
        value_template: "{{ '%0.0f'|format(states('sensor.hot_tub_temp_int') | float / 10.0) }}"
        device_class: temperature
      hot_tub_temp_mem:
        friendly_name: Hot Tub Temp Memory
        unit_of_measurement: '°F'
        value_template: >
          {% if ( not (states('sensor.hot_tub_temp')|float > states('sensor.hot_tub_temp_mem')|float + 5 or states('sensor.hot_tub_temp')|float < states('sensor.hot_tub_temp_mem')|float - 5)), "true" %}
          {{ states('sensor.hot_tub_temp')|float }}
          {% else %}
          {{ states('sensor.hot_tub_temp_mem')|float }}
          {% endif %}
sensor:
  - platform: filter
    name: "Filtered Hot Tub Temp"
    entity_id: sensor.hot_tub_temp
    filters:
    - filter: outlier
      window_size: 5
      radius: 5.0
2

This should only appear once in your configuration:

sensor:

Delete the extra one you added above the filter sensor.