Astrotek RJ45 RJ11 Coaxial Network Ethernet LAN Phone Cable Tester Wire Tracker is a versatile handheld tool designed for professional technicians and DIY enthusiasts to efficiently test and verify RJ45 (Ethernet), RJ11/RJ12 (phone), and BNC/coaxial cables. This device features a master unit and a detachable remote unit that allow for comprehensive end-to-end cable diagnostics.

Key testing functionalities include checking pin-to-pin continuity, detecting wiring errors such as miswiring, open circuits, shorts, and crossover conditions. The tester supports widely used wiring standards including TIA-568A/B and AT&T 258A and is compatible with Cat5, Cat5e, and 10/100 Base-T Ethernet networks.

Equipped with 9 LED indicators on both master and remote units, users get instant visual feedback on cable status. The unit offers automatic and manual scanning modes to map and troubleshoot cable lines effectively. Additional grounding and shield tests ensure high reliability and cable integrity.

A built-in wire-tracking feature comes with a compatible probe for locating cables behind walls, ceilings, and floors, facilitating cable identification and traceability in complex environments. The Astrotek tester operates on a standard 9V battery (not included), making it portable and convenient for fieldwork.

This cable tester is perfect for network installers, maintenance professionals, and home users seeking a straightforward, reliable solution to verify network and phone cabling quickly and accurately.