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  DB<14> $volt = "0.940V\n"

  DB<15>  print "matched\n" if $volt =~  /^0\.9[0-4]+V$/
...

  DB<18>  print "matched\n" if $volt eq "0.940V";
matched

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print ">$voltages[0]<\n"; # should print : >0.940V<