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See more product details Portable handheld design makes this easy to use.Even if the cable is pre-installed it can be test with detachable part. RJ11 Telephone cable and RJ45 LAN cable both can be tested with the tester.it supports RJ45/RJ11/RJ12/CAT6/CAT7. Complete error free operation with DC detecting anode and cathode determination,ringing signal detecting open,short and cross circuit testing.







