This is a dual power USB powered network cable tester
support cat8/cat7/cat6e/cat5 cable cat6 tester, the interface supports RJ11 6P and RJ45 8P
This ethernet cable tester supports RJ11 telephone cable and RJ45 LAN cable testing, it can test and check continuity, open circuit, short circuit and crossover cable.
Regarding the power supply of the network cable tester: a DC9V battery (included) is required to support mobile power supply! (including power cord)
Provide life-long after-sales support. Let you purchase worry-free.