BK Precision 231A Multi-Network Cable Tester

The BK Precision 231A Deluxe Multi-Network Cable Tester is a compact, battery-powered handheld tool that quickly verifies a wide range of copper network cables, including 10BaseT, 10Base2, 100BaseTx, RJ45, RJ11, 356A, TIA-568A, TIA-568B, and Token Ring. It provides fault analysis across Open, Short, Reverse, and Cross wiring to pinpoint wiring issues in both twisted-pair and coax runs. Powered by a 9V battery, the unit measures 5.2 x 3 x 1.6 inches and weighs about 7.1 ounces, and ships with a Master Unit, Remote Terminator, three patch cables, a carrying case, and a BNC-to-BNC adapter. When used with the optional remote kit, testing can reach cables installed far away in walls or at patch panels up to 1,000 feet, making it suitable for field work and quick wiring verification. The tester supports multiple wiring standards and configurations and uses clear indicators to identify the tested cable’s status and fault type, enabling technicians to diagnose network wiring quickly and accurately.