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Check-All Universal Cable Tester By At Box Technology Network Testing Device 2000 ft The CTK-CKAL Check-All Network Testing Device is equipped with two microprocessors that allow the tester to check up to 5 twisted pairs (10 pins) of shielded or unshielded patch cables. The Check-All also comes with built-in tone generator to allow users to quickly trace wiring using tone probes. ...

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