RJ45 main port (M),tester LOOPBACK RJ45 port (L),remote identifier RJ45 port (R). 5%(0.5m or 1.5 ft) (AMP, AT&T Category 5 cable). 4 1.5V AAA battery (not included) Contains: 1 Multi-network cable tester 1 Remote test jack 1 Instruction.
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