Network Cable Test ToolBattery-operated network RJ-45 cable Tester.
Tester also tests BNC network cables.
This in Expensive tester is great to check wires on the Job.
A must have for Every computer Technicians Tool Box.
Continuity Tester Features:
Checks RJ-45 and BNC network cables
Checks up to four pairs of conductors for continuity and correct polarity
9-Volt Battery Not Included