Site updated at 2017-04-18 08:30:03 UTC

components/alert/index.html

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   <p>The <code class="highlighter-rouge">alert</code> component is designed to notify you when problematic issues arise. For example, if the garage door is left open, the <code class="highlighter-rouge">alert</code> component can be used remind you of this by sending you repeating notifications at customizable intervals. This is also useful for low battery sensors, water leak sensors, or any condition that may need your attention.</p>
 <p>Alerts will add an entity to the front end only when they are firing. This entity allows you to silence an alert until it is resolved.</p>
+<p>When using the <code class="highlighter-rouge">alert</code> component it is important that the timezone used for Home Assistant and the underlying operating system match. Failing to do so may result in multiple alerts being sent at the same time (such as when Home Assistant is set to the <code class="highlighter-rouge">America/Detroit</code> timezone but the operating system uses <code class="highlighter-rouge">UTC</code>).</p>
 <h3><a class="title-link" name="basic-example" href="#basic-example"></a> Basic Example</h3>
 <p>The <code class="highlighter-rouge">alert</code> component makes use of any of the <code class="highlighter-rouge">notifications</code> components. To setup the <code class="highlighter-rouge">alert</code> component, first, you must setup a <code class="highlighter-rouge">notification</code> component. Then, add the following to your configuration file:</p>
 <div class="language-yaml highlighter-rouge"><pre class="highlight"><code><span class="c1"># Example configuration.yaml entry</span>