How to make a continuity tester at home | continuity tester pen | Make continuity tester with light 

How to make a continuity tester at home | continuity tester pen | Make continuity tester with light
This video is about How to make a continuity tester at home by using pen battery and a led it is simplest way to make an continuity tester . I hope this video will be helpful to all people who want to make a continuity tester both as hobby and to use in life...
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