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测电笔
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产品介绍 |
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BESTEST 7/9
1. Testing AC voltage from 100V up to a maximum of 500V against earth.
2. The metel part on top of the indicator must be touched to operate it and the eart-hing position of the user largely determines whether it lights up or not.
3. Failure to light up therefore dose not indicate with certainly that no voltage be pre-sent.
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