How to make voice control smart alarm for door

Please watch: "Make wireless speaker using led light DIY no bluetooth required || Li-Fi technology" https://www.seevid.ir/fa/w/m_SUMOcaR9Y --~-- Hello guys,In this video I will show you how you can make a different type of door bell,which can record your voice you can use it as your door bell or any other places wherever you want... This is very simple easy to make.You can use your computer or laptop speaker or your bluetooth speaker...

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