1. Universal cable: RJ45 CAT5, CAT5E, CAT6, CAT6A (UTPSTP), RJ11 RJ12 telephone line CAT3 (6P2C P4C P6C) 
2Test cables for problematic shorts, opens, cross-pairs, and other wiring faults, keeping the network running smoothly 
3. Quick test results (open circuit, crossover, straight through, open circuit), quickly detect the crimping condition of the crystal head, and can also be used as a lan tester 
4. Quickly judge the power supply type and power supply status of the POE switch, and prompt the battery and low voltage 
5. Support 802.3af 802.3at two standards, the maximum test distance is 2000m, used in home, industry and other fields (battery not included in the package)