Reliable Internet Order Verification System

Long distance wiring tracing internet cable order verifying wiring voltage positive or negative characteristic measuring wiring shorts inspection low battery indication tracing sensitiveness and volume adjusting headphone jack output flashlight Transmitter,1.5v AAA batteries receiver, 6F 22 9v battery,manual ,RJ11 crystal head wiring,RJ45 crystal head wiring, Alligator clip wiring.