App to Alarm when No Signal

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http://forum.xda-developers.com – Does Google have an app that will sound an alarm when a specific wifi signal turns off or it cannot find that signal? Will be using it for security purposes. Smartphone will be left at home at all times, and will need an alarm to prevent it from being stolen. Thanks! Sent from my GT-N7000 using xda app-developers app (HowTos)