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My design is a combination of LED and key .Due to the insufficient light in the evening ,we are not able to see the keyhole of the door.Automatic -lighting keys which are supported by small bulb of LED make it convenient to open the door.
Room 635,11th Building,NanChang University 999 XueFu Road,Honggutan New NanChang,JiangXi Province
NanChang, China
Xiaojun Zhao,
Room 635,11th Building,NanChang University 999 XueFu Road,Honggutan New NanChang,JiangXi Province