pengendali jarak jauh dengan handphone

it is possible to handle the connection via handphone Lock and close the door by using mobile phones as a remote control. Very effective and efficient if we try to apply in an office environment that has a central door as access in and out into the room. Enough that the central door 1 we use our automatic door modifications to install mobile phone and sim card and gave him an automatic has a mobile phone number as the remote control number. So we can open and close the door in Jakarta from Bandung, Yogyakarta and even abroad. Fun is not it? It's just a thought, because I aka key officers and artisans open the door closes.
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