I always wanted to use my Galaxy s3 phone to open my gate or unlock my Front door. I just don't like the idea of carrying around extra remotes for such basic tasks. Along comes the sainsmart rj45 8 relay device. Using their free app anyone can control devices that can turn on and off. Install the...By: Mjhobby
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from Instructables: exploring - technology - robots http://ift.tt/1vSW4yU
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