Condition: Brand New Features: Cable Lan Tester: -- This cable tester tests RJ45 and RJ45 network cables, Easy and convenient to clarify the connecting condition. Efficient scan for the missing wiring, disorder cable, Open and short circuit as well as crossover circuit. Powered by DC 9V reduplicated battery (not included). Adjusting the speed knob will change the LEDs flash speed, it helps seeing the LEDs state. Specification: Product Name: Cable tester Material : plastic Color: Yellow and Black Power Supply:9v Reduplicated (not included) Capable of Testing Cables :RJ45/RJ11 connector Dimension:112*96*25mm(L*W*T) Package Includes: 1 x Cable Tester Only Use Original Product