All electronic components tester device| useful tool

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This tool should be in every home - Useful invention for your work
'All electronic components tester device| useful tool
In this circuit , you can test & check any type of electronic items..

That amazing tool should be in every home..
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Wah luar biasa bosku. Ide creative. Oke kawanku salam sukses selalu dan salam kenal

Revandolankandang
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What's Led driver output voltage can you Tell me?

nexxus
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Isn't this just a continuity tester ?

megaraitei