testerpliiats, mis tagab lihtsa ja täpse mõõtetulemuse pinge olemasolu kohta pingemõõturiteta
tester pen which provides simple, accurate testing for the presence of voltage, without the complications of more detailed multimeters, clamp meters etc.
To use a voltage indicator pen you only need to touch the tip of the pen to the wire or the tip of the pen needs to be placed on the faceplate of a smaller plug slot.
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