Nice Write-up on building an Arduino Wireless Alarm System

Posted on August 20, 2014 by robertwilkie

Good write-up on how to build a simple, wireless (RF), alarm system with arduino and mini’s.  I think it could be cheap’ed down more if so desired too.

http://www.instructables.com/id/ARDUINO-WIRELESS-HOME-SECURITY-SYSTEM/?ALLSTEPS

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