The OMNITRONIC LH-089 Cable Tester System is a separable tester for standard audio and data cables. Its sender and receiver modules test each cable pin individually and indicate the assignment through visible LED signals. It supports XLR, jack, DIN, RCA, speaker, RJ45, RJ11, BNC and banana connectors. Audible and visual continuity signals, three test speeds and an adjustable test-tone generator are provided. The system operates on two 9 V batteries.