Designed to identify cables in an MDU and detect troublesome short circuits, this pocket continuity tester and toner is perfect for testing cables up to 5,000 ft (1,500 m) on the go. This tester features the following: Loud tone identifies line carrying signal LED light indicates splitters, DC shorts, and other self-grounding devices in cable Manual ON/OFF switch preserves battery life Right angle male push-on connector is ideal for working in confined areas Female push-on connector is perfect for speed toning Accurate up to 5,000 feet (1,500 m) Connect the toner without emitting a tone under discretion Includes (1) AAA 1.5V battery and (1) pocket clip