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Continuity tester


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  • 1 year later...

 

 

on a separate note why would a tester like :-

http://www.wizard-devices.com/dsl.shtml

 

cost $60 ???

when its probably just got one resistor in it limiting the current to a safe level

 

just found what looks like the patent for the wizard device,

Patent No. 5650727 july22 1997

Edited by dave321
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