The following screenshot shows the simple web page that is included with the code that comes with this book. The interface allows you to turn all four of the outputs on and off. You can easily change the names on the buttons and the headings by editing the provided HTML code.
The web page is hosted by the BeagleBone/Alarm system, using the BeagleBone's built-in socket server.
What this means is that you can use your smart phone to access the alarm remotely so as to: