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Template Sensor
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</h1>
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</header>
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<hr class="divider">
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<p>The <code class="highlighter-rouge">template</code> platform supports sensors which breaks out <code class="highlighter-rouge">state_attributes</code> from other entities.</p>
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<p>To enable Template sensors in your installation, add the following to your <code class="highlighter-rouge">configuration.yaml</code> file:</p>
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<div class="language-yaml highlighter-rouge"><pre class="highlight"><code><span class="c1"># Example configuration.yaml entry</span>
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<span class="s">sensor</span><span class="pi">:</span>
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<span class="pi">-</span> <span class="s">platform</span><span class="pi">:</span> <span class="s">template</span>
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<span class="s">sensors</span><span class="pi">:</span>
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<span class="s">solar_angle</span><span class="pi">:</span>
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<span class="s">value_template</span><span class="pi">:</span> <span class="s1">'</span><span class="s">{{</span><span class="nv"> </span><span class="s">states.sun.sun.attributes.elevation</span><span class="nv"> </span><span class="s">}}'</span>
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<span class="s">friendly_name</span><span class="pi">:</span> <span class="s1">'</span><span class="s">Sun</span><span class="nv"> </span><span class="s">angle'</span>
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<span class="s">unit_of_measurement</span><span class="pi">:</span> <span class="s1">'</span><span class="s">degrees'</span>
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<span class="s">sunrise</span><span class="pi">:</span>
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<span class="s">value_template</span><span class="pi">:</span> <span class="s1">'</span><span class="s">{{</span><span class="nv"> </span><span class="s">states.sun.sun.attributes.next_rising</span><span class="nv"> </span><span class="s">}}'</span>
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</code></pre>
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</div>
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<p>Configuration variables:</p>
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<ul>
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<li><strong>sensors</strong> array (<em>Required</em>): List of your sensors.
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<ul>
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<li><strong>friendly_name</strong> (<em>Optional</em>): Name to use in the Frontend.</li>
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<li><strong>unit_of_measurement</strong> (<em>Optional</em>): Defines the units of measurement of the sensor, if any.</li>
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<li><strong>value_template</strong> (<em>Optional</em>): Defines a <a href="/topics/templating/">template</a> to extract a value from the payload.</li>
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<li><strong>entity_id</strong> (<em>Optional</em>): Add a list of entity IDs so the sensor only reacts to state changes of these entities. This will reduce the number of times the sensor will try to update it’s state.</li>
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</ul>
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</li>
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</ul>
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<h2><a class="title-link" name="examples" href="#examples"></a> Examples</h2>
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<p>In this section you find some real life examples of how to use this sensor.</p>
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<h3><a class="title-link" name="sun-angle" href="#sun-angle"></a> Sun angle</h3>
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<p>This example shows the sun angle in the frontend.</p>
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<div class="language-yaml highlighter-rouge"><pre class="highlight"><code><span class="s">sensor</span><span class="pi">:</span>
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<span class="pi">-</span> <span class="s">platform</span><span class="pi">:</span> <span class="s">template</span>
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<span class="s">sensors</span><span class="pi">:</span>
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<span class="s">solar_angle</span><span class="pi">:</span>
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<span class="s">value_template</span><span class="pi">:</span> <span class="s1">'</span><span class="s">{{</span><span class="nv"> </span><span class="s">"%+.1f"|format(states.sun.sun.attributes.elevation)</span><span class="nv"> </span><span class="s">}}'</span>
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<span class="s">friendly_name</span><span class="pi">:</span> <span class="s1">'</span><span class="s">Sun</span><span class="nv"> </span><span class="s">Angle'</span>
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<span class="s">unit_of_measurement</span><span class="pi">:</span> <span class="s1">'</span><span class="s">°'</span>
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</code></pre>
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</div>
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<h3><a class="title-link" name="renaming-sensor-output" href="#renaming-sensor-output"></a> Renaming sensor output</h3>
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<p>If you don’t like the wording of a sensor output then the template sensor can help too. Let’s rename the output of the <a href="/components/sun/">Sun component</a> as a simple example:</p>
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<div class="language-yaml highlighter-rouge"><pre class="highlight"><code><span class="s">sensor</span><span class="pi">:</span>
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<span class="pi">-</span> <span class="s">platform</span><span class="pi">:</span> <span class="s">template</span>
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<span class="s">sensors</span><span class="pi">:</span>
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<span class="s">sun_state</span><span class="pi">:</span>
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<span class="s">value_template</span><span class="pi">:</span> <span class="s1">'</span><span class="s">{%</span><span class="nv"> </span><span class="s">if</span><span class="nv"> </span><span class="s">is_state("sun.sun",</span><span class="nv"> </span><span class="s">"above_horizon")</span><span class="nv"> </span><span class="s">%}up{%</span><span class="nv"> </span><span class="s">else</span><span class="nv"> </span><span class="s">%}down{%</span><span class="nv"> </span><span class="s">endif</span><span class="nv"> </span><span class="s">%}'</span>
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<span class="s">friendly_name</span><span class="pi">:</span> <span class="s1">'</span><span class="s">Sun</span><span class="nv"> </span><span class="s">state'</span>
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</code></pre>
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</div>
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<p>Processes monitored by the <a href="/components/sensor.systemmonitor/">System Monitor sensor</a> show <code class="highlighter-rouge">on</code> or <code class="highlighter-rouge">off</code> if they are running or not. This example shows how the output of a monitored <code class="highlighter-rouge">glances</code> process can be renamed.</p>
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<div class="language-yaml highlighter-rouge"><pre class="highlight"><code><span class="s">sensor</span><span class="pi">:</span>
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<span class="pi">-</span> <span class="s">platform</span><span class="pi">:</span> <span class="s">template</span>
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<span class="s">sensors</span><span class="pi">:</span>
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<span class="s">glances</span><span class="pi">:</span>
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<span class="s">value_template</span><span class="pi">:</span> <span class="s1">'</span><span class="s">{%</span><span class="nv"> </span><span class="s">if</span><span class="nv"> </span><span class="s">is_state("sensor.process_glances",</span><span class="nv"> </span><span class="s">"off")</span><span class="nv"> </span><span class="s">%}not</span><span class="nv"> </span><span class="s">running{%</span><span class="nv"> </span><span class="s">else</span><span class="nv"> </span><span class="s">%}running{%</span><span class="nv"> </span><span class="s">endif</span><span class="nv"> </span><span class="s">%}'</span>
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<span class="s">friendly_name</span><span class="pi">:</span> <span class="s1">'</span><span class="s">Glances'</span>
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</code></pre>
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</div>
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<p>By comparing the details published on the <a href="/topics/templating/">template</a> page the same can be archived with a different approach:</p>
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<div class="language-yaml highlighter-rouge"><pre class="highlight"><code><span class="s">value_template</span><span class="pi">:</span> <span class="s2">"</span><span class="s">{%if</span><span class="nv"> </span><span class="s">states.sensor.ENTITY_ID.state</span><span class="nv"> </span><span class="s">==</span><span class="nv"> </span><span class="s">'on'</span><span class="nv"> </span><span class="s">%}running{%elif</span><span class="nv"> </span><span class="s">states.switch.ENTITY_ID.state</span><span class="nv"> </span><span class="s">==</span><span class="nv"> </span><span class="s">'off'</span><span class="nv"> </span><span class="s">%}not</span><span class="nv"> </span><span class="s">running{%</span><span class="nv"> </span><span class="s">endif</span><span class="nv"> </span><span class="s">%}"</span>
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</code></pre>
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</div>
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<p>The <a href="/components/binary_sensor.template/">Binary template sensor</a> is the one in similar cases if you prefer to see an icon instead of text.</p>
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<h3><a class="title-link" name="multiline-example-with-an-if-test" href="#multiline-example-with-an-if-test"></a> Multiline example with an if test</h3>
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<p>This example shows a multiple line template with and if test. It looks at a sensing switch and shows on/off in the frontend.</p>
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<div class="language-yaml highlighter-rouge"><pre class="highlight"><code><span class="s">sensor</span><span class="pi">:</span>
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<span class="pi">-</span> <span class="s">platform</span><span class="pi">:</span> <span class="s">template</span>
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<span class="s">sensors</span><span class="pi">:</span>
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<span class="s">kettle</span><span class="pi">:</span>
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<span class="s">friendly_name</span><span class="pi">:</span> <span class="s1">'</span><span class="s">Kettle'</span>
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<span class="s">value_template</span><span class="pi">:</span> <span class="pi">>-</span>
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<span class="no">{%- if is_state("switch.kettle", "off") %}</span>
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<span class="no">off</span>
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<span class="no">{% elif states.switch.kettle.attributes.kwh < 1000 %}</span>
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<span class="no">standby</span>
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<span class="no">{% elif is_state("switch.kettle", "on") %}</span>
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<span class="no">on</span>
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<span class="no">{% else %}</span>
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<span class="no">failed</span>
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<span class="no">{%- endif %}</span>
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<span class="s">next_sensor</span><span class="pi">:</span>
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<span class="pi">[</span><span class="nv">...</span><span class="pi">]</span>
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</code></pre>
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</div>
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<p class="note">
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Please note the blank line to close the multi-line template.
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</p>
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<h3><a class="title-link" name="change-the-unit-of-measurment" href="#change-the-unit-of-measurment"></a> Change the unit of measurment</h3>
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<p>With a template sensor it’s easy to convert given values into others if the unit of measurement don’t fit your needs.</p>
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<div class="language-yaml highlighter-rouge"><pre class="highlight"><code><span class="s">sensor</span><span class="pi">:</span>
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<span class="pi">-</span> <span class="s">platform</span><span class="pi">:</span> <span class="s">template</span>
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<span class="s">sensors</span><span class="pi">:</span>
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<span class="s">transmission_down_speed_kbps</span><span class="pi">:</span>
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<span class="s">value_template</span><span class="pi">:</span> <span class="s1">'</span><span class="s">{{</span><span class="nv"> </span><span class="s">states.sensor.transmission_down_speed.state</span><span class="nv"> </span><span class="s">|</span><span class="nv"> </span><span class="s">multiply(1024)</span><span class="nv"> </span><span class="s">}}'</span>
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<span class="s">friendly_name</span><span class="pi">:</span> <span class="s1">'</span><span class="s">Transmission</span><span class="nv"> </span><span class="s">Down</span><span class="nv"> </span><span class="s">Speed'</span>
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<span class="s">unit_of_measurement</span><span class="pi">:</span> <span class="s1">'</span><span class="s">kB/s'</span>
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<span class="s">transmission_up_speed_kbps</span><span class="pi">:</span>
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<span class="s">value_template</span><span class="pi">:</span> <span class="s1">'</span><span class="s">{{</span><span class="nv"> </span><span class="s">states.sensor.transmission_up_speed.state</span><span class="nv"> </span><span class="s">|</span><span class="nv"> </span><span class="s">multiply(1024)</span><span class="nv"> </span><span class="s">}}'</span>
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<span class="s">friendly_name</span><span class="pi">:</span> <span class="s1">'</span><span class="s">Transmission</span><span class="nv"> </span><span class="s">Up</span><span class="nv"> </span><span class="s">Speed'</span>
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<span class="s">unit_of_measurement</span><span class="pi">:</span> <span class="s1">'</span><span class="s">kB/s'</span>
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</code></pre>
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</div>
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</article>
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</div>
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<aside id="sidebar" class="grid__item one-third lap-one-whole palm-one-whole">
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<div class="grid">
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<section class="aside-module grid__item one-whole lap-one-half">
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<div class='edit-github'><a href='https://github.com/home-assistant/home-assistant.github.io/tree/current/source/_components/sensor.template.markdown'>Edit this page on GitHub</a></div>
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<div class='brand-logo-container section'>
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<img src='/images/supported_brands/home-assistant.png' />
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</div>
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<div class='section'>
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IoT class<sup><a href='/blog/2016/02/12/classifying-the-internet-of-things/#classifiers'><i class="icon-info-sign"></i></a></sup>: Local Push
|
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</div>
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<div class='section'>
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Introduced in release: 0.12
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</div>
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<div class='section'>
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<h1 class='title delta'>Related components</h1>
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<ul class='divided'>
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||
<li><a href='/components/binary_sensor.template/'>
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Template Binary Sensor
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</a></li>
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<li><a href='/components/switch.template/'>
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Template switch
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</a></li>
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</ul>
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</div>
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<div class='section'>
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||
<h1 class="title delta">Category Sensor</h1>
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||
<ul class='divided'>
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||
<li>
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||
<a href='/components/sensor.apcupsd/'>APCUPSd Sensor</a>
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||
</li>
|
||
<li>
|
||
<a href='/components/sensor.bloomsky/'>BloomSky Sensor</a>
|
||
</li>
|
||
<li>
|
||
<a href='/components/sensor.command_line/'>Command line Sensor</a>
|
||
</li>
|
||
<li>
|
||
<a href='/components/sensor.dweet/'>Dweet.io</a>
|
||
</li>
|
||
<li>
|
||
<a href='/components/binary_sensor.ecobee/'>Ecobee Binary Sensor</a>
|
||
</li>
|
||
<li>
|
||
<a href='/components/sensor.enocean/'>EnOcean Sensor</a>
|
||
</li>
|
||
<li>
|
||
<a href='/components/sensor.envisalink/'>Envisalink Sensor</a>
|
||
</li>
|
||
<li>
|
||
<a href='/components/sensor.gpsd/'>GPSD</a>
|
||
</li>
|
||
<li>
|
||
<a href='/components/sensor.http/'>HTTP Sensor</a>
|
||
</li>
|
||
<li>
|
||
<a href='/components/sensor.homematic/'>Homematic Sensor</a>
|
||
</li>
|
||
<li>
|
||
<a href='/components/sensor.imap/'>IMAP Unread E-mail</a>
|
||
</li>
|
||
<li>
|
||
<a href='/components/sensor.mqtt/'>MQTT Sensor</a>
|
||
</li>
|
||
<li>
|
||
<a href='/components/sensor.modbus/'>Modbus Sensor</a>
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||
</li>
|
||
<li>
|
||
<a href='/components/sensor.moldindicator/'>Mold Indicator</a>
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||
</li>
|
||
<li>
|
||
<a href='/components/sensor.mysensors/'>MySensors Sensor</a>
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||
</li>
|
||
<li>
|
||
<a href='/components/sensor.nest/'>Nest Sensor</a>
|
||
</li>
|
||
<li>
|
||
<a href='/components/sensor.neurio_energy/'>Neurio</a>
|
||
</li>
|
||
<li>
|
||
<a href='/components/sensor.octoprint/'>OctoPrint Sensor</a>
|
||
</li>
|
||
<li>
|
||
<a href='/components/sensor.onewire/'>One wire Sensor</a>
|
||
</li>
|
||
<li>
|
||
<a href='/components/sensor.rest/'>RESTful Sensor</a>
|
||
</li>
|
||
<li>
|
||
<a href='/components/sensor.rfxtrx/'>RFXtrx Sensor</a>
|
||
</li>
|
||
<li>
|
||
<a href='/components/sensor.tcp/'>TCP Sensor</a>
|
||
</li>
|
||
<li>
|
||
<a href='/components/sensor.temper/'>TEMPer Sensor</a>
|
||
</li>
|
||
<li>
|
||
<a href='/components/sensor.tellstick/'>TellStick Sensor</a>
|
||
</li>
|
||
<li>
|
||
<a href='/components/sensor.tellduslive/'>Telldus Live sensor</a>
|
||
</li>
|
||
<li>
|
||
Template Sensor
|
||
</li>
|
||
<li>
|
||
<a href='/components/sensor.thinkingcleaner/'>Thinking Cleaner sensor</a>
|
||
</li>
|
||
<li>
|
||
<a href='/components/sensor.vera/'>Vera Sensor</a>
|
||
</li>
|
||
<li>
|
||
<a href='/components/sensor.verisure/'>Verisure Sensor</a>
|
||
</li>
|
||
<li>
|
||
<a href='/components/sensor.wink/'>Wink Sensor</a>
|
||
</li>
|
||
<li>
|
||
<a href='/components/sensor.zwave/'>Z-Wave Sensor</a>
|
||
</li>
|
||
<li>
|
||
<a href='/components/sensor.zigbee/'>ZigBee Sensor</a>
|
||
</li>
|
||
<li>
|
||
<a href='/components/sensor.arest/'>aREST Sensor</a>
|
||
</li>
|
||
<li>
|
||
<a href='/components/sensor.mfi/'>mFi Sensor</a>
|
||
</li>
|
||
</ul>
|
||
</div>
|
||
</section>
|
||
|
||
</div>
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|
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<div class="credit">
|
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Contact us at <a href='mailto:hello@home-assistant.io'>hello@home-assistant.io</a>.<br>
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</div>
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</div>
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</div>
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</div>
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</footer>
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