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Elfix Polarity Tester


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Equipment powered by the mains generates an electromagnetic field (EMF). In our experience, the smaller the EMF, the better the performance of your Hi-Fi or Home Cinema system.

The Elfix tester is particularly useful for measuring EMF generated with equipment that is powered by a figure-8 mains lead. It allows you to identify which way round to connect the figure-8 plug and generate the lowest EMF.


  • Allows the measurement of electromagentic fields
  • Audible and visual indication
  • Powered by 2 AA batteries, included
  • Easy to use
  • Full instructions included
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