Quickly locate, trace, and diagnose communication lines with this multifunction network cable tester and line finder. Designed for Ethernet and telephone maintenance, the transmitter and probe help technicians identify cables without stripping insulation. Test RJ45 and RJ11 lines, verify cable sequence, and detect issues such as open circuits, short circuits, reversed wiring, and crossed pairs. The tool also checks telephone line status including idle, ringing, and off‑hook conditions while distinguishing TIP and RING lines. A built‑in headphone jack supports monitoring in loud environments, and adjustable probe volume improves signal detection for organized cable maintenance and troubleshooting.
Comprehensive Cable Sequence Diagnostics: Detect wiring problems including open circuits, short circuits, reversed connections, and crossed pairs
RJ11 and RJ45 Cable Tracing with Probe Tone: Use the transmitter and probe receiver to quickly locate network and telephone lines through walls, bundles, or patch panels
Telephone Line Status Identification: Analyze active telephone lines to determine working conditions such as idle, ringing, or off‑hook
DC Level and Polarity Detection: Measure line voltage levels and identify positive or negative polarity directly from the transmitter
Integrated 3.5 mm Headphone Monitoring Jack: Connect standard headphones to the receiver for clearer signal detection in loud work environments such as server rooms, offices, or equipment
Low-Voltage Indicator Alerts: Indicator lights signal when the transmitter or receiver power level drops below the operating range, helping ensure reliable cable tracing and testing performance