Network Cable Tester & Line Finder | RJ45 Wire Tracing, Length & Break Detection

This network cable tester and line finder is a versatile diagnostic tool for identifying, tracing, and testing network cables in residential, commercial, and industrial environments. It allows technicians to quickly locate cables, detect breaks, measure cable length, and verify correct wiring without dismantling installations.

With adjustable sensitivity, the device enables precise cable tracking even in complex wiring environments. The integrated RJ45 interface supports both single and dual-port testing, while the wiring map function checks for opens, shorts, miswires, and split pairs using selectable fast or slow test modes.

Cable length measurement and breakpoint detection help identify faults accurately, reducing troubleshooting time and improving installation efficiency. Designed with anti-interference signal processing, this tester performs reliably in electrically noisy environments.

Typical applications include:

• Network and Ethernet cable installation

• IT and data centre maintenance

• Office and commercial network troubleshooting

• Structured cabling verification

• Telecom and low-voltage wiring work

Key Features

• Network cable tracing and line finding

• Adjustable sensitivity for precise signal detection

• RJ45 network interface (single and dual port support)

• Cable wiring map test (fast / slow modes)

• Cable length measurement

• Breakpoint and disconnection detection

• Anti-interference design for stable performance

• Clear display with test mode indicators