Bluetooth HC-05 Module by hegars | Feb 19, 2020 | Electronics | http://www.hc01.com/productdetail?productid=201702040005 https://item.taobao.com/item.htm?spm=a1z10.5-c.w4002-22429966335.24.240a53deu6Q2sz&id=5725927809
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