PoE tester LANBERG NT-0402 — PoE network cable tester with RJ-45/RJ-11 support, LED indicators, power LED, on/off switch

Lanberg’s Network Cable Tester PoE NT-0402 is a compact, two-part device for checking continuity and basic faults in Ethernet and telephone cabling. It is designed to verify wired ICT networks by testing UTP/FTP/SFTP cables terminated with RJ-45 connectors and telephone leads with RJ-11/RJ-12 connectors. The tester detects broken pairs, short circuits and incorrect pairings and includes LED indicators for clear status feedback.

Advantages

The tester provides quick verification of cable wiring and continuity and simplifies locating common faults without the need for complex equipment. Its two-piece design (main unit and terminator) allows testing over the full cable length, while clear LED indicators and a power switch make operation straightforward. The unit supports a range of cable types and connector standards used in LAN and telephone installations.

Suitable for

• Testing Ethernet cables (UTP/FTP/SFTP) terminated with RJ-45 connectors
• Testing telephone cables terminated with RJ-11/RJ-12 connectors
• Verifying pair continuity and identifying short circuits or miswired pairs
• Field testing by network installers and technicians during installation and maintenance

Key specifications

• Model: Lanberg NT-0402
• Supported connectors: RJ-45, RJ-12/RJ-11
• Cable types: UTP, FTP, SFTP and telephone wires
• Indicator type: LEDs on both main unit and terminator
• Power: battery powered (check product packaging for battery type and installation)

How to use

Connect the main unit to one end of the cable and attach the terminator to the opposite end using the appropriate connector (RJ-45 for Ethernet, RJ-11/RJ-12 for telephone). Switch on the tester and observe the LED sequence to confirm continuity and correct pair wiring. If LEDs indicate an open, short or miswire, inspect the cable terminations and pairs. Use the device with the cable disconnected from live network equipment and PoE sources before testing.

Recommendations

For safe and accurate testing, disconnect cables from active network and PoE power sources before use, verify battery level prior to testing, and store the tester and terminator together to avoid losing the remote unit.