abouty the sensor

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about knowledge
Posts: 1
Joined: Sat Nov 30, 2013 4:20 pm

abouty the sensor

Post by about knowledge » Sun Dec 01, 2013 12:29 am

hello
I want to make a sensor beside the room door which can control any cell phone passes in front of it
( I just want that sensor can be able to change the mode of the ringer setting to put it in silence mode ) because I desire to keep the room in a quiet state...
if you can do that I will be glad if you send me the electric circuit that can achieve that purpose
or if there is other ways to avoid the noise of the mobile
regares

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