Home-AssistantConfig/sensor/devices.yaml

- platform: template
  sensors:
      wii:
        friendly_name: 'Wii'
        value_template: >-
            {%- if is_state("device_tracker.wii", "home") %}
                Online
            {% else %}
                Offline
            {%- endif %}
      tablotv:
        friendly_name: 'Tablo TV'
        value_template: >-
            {%- if is_state("device_tracker.tablotv", "home") %}
                Online
            {% else %}
                Offline
            {%- endif %}	

      actiontechap:
        friendly_name: 'ActionTech AP'
        value_template: >-
            {%- if is_state("device_tracker.actiontechap", "home") %}
                Online
            {% else %}
                Offline
            {%- endif %}

      cisco_ap:
        friendly_name: 'Cisco Main AP'
        value_template: >-
            {%- if is_state("device_tracker.cisco_ap", "home") %}
                Online
            {% else %}
                Offline
            {%- endif %}
             
      hue_hub:
        friendly_name: 'Hue Hub'
        value_template: >-
            {%- if is_state("device_tracker.hue_hub", "home") %}
                Online
            {% else %}
                Offline
            {%- endif %}
      alexa_echo:
        friendly_name: 'Alexa Echo'
        value_template: >-
            {%- if is_state("device_tracker.alexa_echo", "home") %}
                Online
            {% else %}
                Offline
            {%- endif %}	

      amazon_dot:
        friendly_name: 'Amazon Dot'
        value_template: >-
            {%- if is_state("device_tracker.amazon_dot", "home") %}
                Online
            {% else %}
                Offline
            {%- endif %}
            
      circle:
        friendly_name: 'Disney Circle'
        value_template: >-
            {%- if is_state("device_tracker.circle", "home") %}
                Online
            {% else %}
                Offline
            {%- endif %}   

      nest_downstairs:
        friendly_name: 'Downstairs Nest'
        value_template: >-
            {%- if is_state("device_tracker.nest_downstairs", "home") %}
                Online
            {% else %}
                Offline
            {%- endif %}

      nest_upstairs:
        friendly_name: 'Upstairs Nest'
        value_template: >-
            {%- if is_state("device_tracker.nest_upstairs", "home") %}
                Online
            {% else %}
                Offline
            {%- endif %}
  
      rachio:
        friendly_name: 'Rachio Sprinklers'
        value_template: >-
            {%- if is_state("device_tracker.rachio", "home") %}
                Online
            {% else %}
                Offline
            {%- endif %}    
      skybell:
        friendly_name: 'Skybell Doorbell'
        value_template: >-
            {%- if is_state("device_tracker.skybell", "home") %}
                Online
            {% else %}
                Offline
            {%- endif %} 
      samsungtv:
        friendly_name: 'Samsung TV'
        value_template: >-
            {%- if is_state("device_tracker.samsungtv", "home") %}
                Online
            {% else %}
                Offline
            {%- endif %}             

      chromecast_audio_1:
        friendly_name: 'ChromeCast Audio 1'
        value_template: >-
            {%- if is_state("device_tracker.chromecast_audio_1", "home") %}
                Online
            {% else %}
                Offline
            {%- endif %}

      chromecast_audio_2:
        friendly_name: 'ChromeCast Audio 2'
        value_template: >-
            {%- if is_state("device_tracker.chromecast_audio_2", "home") %}
                Online
            {% else %}
                Offline
            {%- endif %}