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Tester Phone Single-dual Line

Tester Phone Single-dual Line

$10.20

For common problem conditions with standard single or dual-line telephone hook-ups. Compact, plugs into any single or dual-line telephone jack. Can be read from any angle. Green means line is OK, red - reversed line, amber - AC voltage present, not lit - dead line.
  • TELEPHONE LINE TESTERS
  • DUAL

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