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Site updated at 2017-03-18 17:12:07 UTC

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MQTT Switch
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<p>The <code class="highlighter-rouge">mqtt</code> switch platform let you control your MQTT enabled switch.</p>
<p>In an ideal scenario, the MQTT device will have a <code class="highlighter-rouge">state_topic</code> to publish state changes. If these messages are published with <code class="highlighter-rouge">RETAIN</code> flag, the MQTT switch will receive an instant state update after subscription and will start with correct state. Otherwise, the initial state of the switch will be false/off.</p>
<p>When a <code class="highlighter-rouge">state_topic</code> is not available, the switch will work in optimistic mode. In this mode, the switch will immediately change state after every command. Otherwise, the switch will wait for state confirmation from device (message from <code class="highlighter-rouge">state_topic</code>).</p>
<p>Optimistic mode can be forced, even if state topic is available. Try to enable it, if experiencing incorrect switch operation.</p>
<p>To enable this switch in your installation, add the following to your <code class="highlighter-rouge">configuration.yaml</code> file:</p>
<div class="language-yaml highlighter-rouge"><pre class="highlight"><code><span class="c1"># Example configuration.yml entry</span>
<span class="s">switch</span><span class="pi">:</span>
<span class="pi">-</span> <span class="s">platform</span><span class="pi">:</span> <span class="s">mqtt</span>
<span class="s">command_topic</span><span class="pi">:</span> <span class="s2">"</span><span class="s">home/bedroom/switch1/set"</span>
</code></pre>
</div>
<p>Configuration variables:</p>
<ul>
<li><strong>name</strong> (<em>Optional</em>): The name of the switch. Default is ‘MQTT Switch’.</li>
<li><strong>state_topic</strong> (<em>Optional</em>): The MQTT topic subscribed to receive state updates.</li>
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<li><strong>retain</strong> (<em>Optional</em>): If the published message should have the retain flag on or not.</li>
<li><strong>value_template</strong> (<em>Optional</em>): Defines a <a href="/topics/templating/">template</a> to extract a value from the payload.</li>
</ul>
<p class="note warning">
Make sure that your topic match exact. <code class="highlighter-rouge">some-topic/</code> and <code class="highlighter-rouge">some-topic</code> are different topics.
</p>
<h2><a class="title-link" name="examples" href="#examples"></a> Examples</h2>
<p>In this section you find some real life examples of how to use this sensor.</p>
<h3><a class="title-link" name="full-configuration" href="#full-configuration"></a> Full configuration</h3>
<p>The example below shows a full configuration for a switch.</p>
<div class="language-yaml highlighter-rouge"><pre class="highlight"><code><span class="c1"># Example configuration.yml entry</span>
<span class="s">switch</span><span class="pi">:</span>
<span class="pi">-</span> <span class="s">platform</span><span class="pi">:</span> <span class="s">mqtt</span>
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<span class="s">retain</span><span class="pi">:</span> <span class="s">true</span>
</code></pre>
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<p>For a check you can use the command line tools <code class="highlighter-rouge">mosquitto_pub</code> shipped with <code class="highlighter-rouge">mosquitto</code> to send MQTT messages. This allows you to operate your switch manually:</p>
<div class="language-bash highlighter-rouge"><pre class="highlight"><code><span class="gp">$ </span>mosquitto_pub -h 127.0.0.1 -t home/bedroom/switch1 -m <span class="s2">"ON"</span>
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