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  <div class="section" id="welcome-to-alarm-decoder-s-documentation">
<h1>Welcome to Alarm Decoder&#8217;s documentation!<a class="headerlink" href="#welcome-to-alarm-decoder-s-documentation" title="Permalink to this headline">¶</a></h1>
<p>This is the API documentation for the <a class="reference external" href="http://www.alarmdecoder.com">Alarm Decoder</a> Python library.  It provides support for interacting with the <a class="reference external" href="http://www.alarmdecoder.com">Alarm Decoder</a> (AD2) family of security alarm devices, including the AD2USB, AD2SERIAL and AD2PI.</p>
<p>The source code, requirements and examples for this project may be found <a class="reference external" href="http://github.com/nutechsoftware/alarmdecoder">here</a>.</p>
<p>Please see the <a class="reference external" href="http://github.com/nutechsoftware/alarmdecoder/tree/master/examples">examples</a> directory for more samples, but a basic one is included below:</p>
<div class="highlight-python"><div class="highlight"><pre><span class="kn">import</span> <span class="nn">time</span>
<span class="kn">from</span> <span class="nn">alarmdecoder</span> <span class="kn">import</span> <span class="n">AlarmDecoder</span>
<span class="kn">from</span> <span class="nn">alarmdecoder.devices</span> <span class="kn">import</span> <span class="n">USBDevice</span>

<span class="k">def</span> <span class="nf">main</span><span class="p">():</span>
    <span class="sd">&quot;&quot;&quot;</span>
<span class="sd">    Example application that prints messages from the panel to the terminal.</span>
<span class="sd">    &quot;&quot;&quot;</span>
    <span class="k">try</span><span class="p">:</span>
        <span class="c"># Retrieve the first USB device</span>
        <span class="n">device</span> <span class="o">=</span> <span class="n">AlarmDecoder</span><span class="p">(</span><span class="n">USBDevice</span><span class="o">.</span><span class="n">find</span><span class="p">())</span>

        <span class="c"># Set up an event handler and open the device</span>
        <span class="n">device</span><span class="o">.</span><span class="n">on_message</span> <span class="o">+=</span> <span class="n">handle_message</span>
        <span class="k">with</span> <span class="n">device</span><span class="o">.</span><span class="n">open</span><span class="p">():</span>
            <span class="k">while</span> <span class="bp">True</span><span class="p">:</span>
                <span class="n">time</span><span class="o">.</span><span class="n">sleep</span><span class="p">(</span><span class="mi">1</span><span class="p">)</span>

    <span class="k">except</span> <span class="ne">Exception</span><span class="p">,</span> <span class="n">ex</span><span class="p">:</span>
        <span class="k">print</span> <span class="s">&#39;Exception:&#39;</span><span class="p">,</span> <span class="n">ex</span>

<span class="k">def</span> <span class="nf">handle_message</span><span class="p">(</span><span class="n">sender</span><span class="p">,</span> <span class="n">message</span><span class="p">):</span>
    <span class="sd">&quot;&quot;&quot;</span>
<span class="sd">    Handles message events from the AlarmDecoder.</span>
<span class="sd">    &quot;&quot;&quot;</span>
    <span class="k">print</span> <span class="n">sender</span><span class="p">,</span> <span class="n">message</span><span class="o">.</span><span class="n">raw</span>

<span class="k">if</span> <span class="n">__name__</span> <span class="o">==</span> <span class="s">&#39;__main__&#39;</span><span class="p">:</span>
    <span class="n">main</span><span class="p">()</span>
</pre></div>
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<p>Table of Contents:</p>
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<li class="toctree-l1"><a class="reference internal" href="alarmdecoder.html">alarmdecoder Package</a><ul>
<li class="toctree-l2"><a class="reference internal" href="alarmdecoder.html#module-alarmdecoder.decoder"><tt class="docutils literal"><span class="pre">decoder</span></tt> Module</a></li>
<li class="toctree-l2"><a class="reference internal" href="alarmdecoder.html#module-alarmdecoder.devices"><tt class="docutils literal"><span class="pre">devices</span></tt> Module</a></li>
<li class="toctree-l2"><a class="reference internal" href="alarmdecoder.html#module-alarmdecoder.messages"><tt class="docutils literal"><span class="pre">messages</span></tt> Module</a></li>
<li class="toctree-l2"><a class="reference internal" href="alarmdecoder.html#module-alarmdecoder.zonetracking"><tt class="docutils literal"><span class="pre">zonetracking</span></tt> Module</a></li>
<li class="toctree-l2"><a class="reference internal" href="alarmdecoder.html#module-alarmdecoder.util"><tt class="docutils literal"><span class="pre">util</span></tt> Module</a></li>
<li class="toctree-l2"><a class="reference internal" href="alarmdecoder.html#module-alarmdecoder.panels"><tt class="docutils literal"><span class="pre">panels</span></tt> Module</a></li>
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<h1>Indices and tables<a class="headerlink" href="#indices-and-tables" title="Permalink to this headline">¶</a></h1>
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