InLine Tester for RJ45 Cables and Connectors with 9 control LEDs

The InLine Tester for RJ45 Cables and Connectors 79998A is a handheld cable tester designed to check twisted-pair network cables, ISDN and telephone cabling, connectors and installations. It displays the status of each conductor and the shield through nine LEDs and includes a remote adapter. The unit is powered by a single 9V battery and is intended for quick on-site verification of cable continuity, pairing and shielding.

Advantages

The tester provides a clear visual indication of each wire and the cable shield with nine LEDs, enabling fast identification of open, shorted or miswired pairs. It supports common RJ45 connectors and telephone/ISDN wiring, includes a detachable remote adapter for testing installed runs, and runs on a standard 9V battery for portable use.

Suitable for

• Testing RJ45 Ethernet patch cables
• Checking ISDN and telephone cabling
• Verifying installed network cable runs with remote unit
• Identifying wiring faults, open circuits, shorts and incorrect pair assignments

Key specifications

• Brand: InLine
• Model / MPN: 79998A
• EAN: 4043718071715
• Connector type: RJ45 (supports twisted-pair and telephone/ISDN wiring)
• Indicators: 9 LEDs (each conductor + shield)
• Power supply: 1 × 9V battery (not included)
• Includes: Remote adapter for testing installed cables
• Category: Cable testers

How to use

Connect the tester main unit to one end of the cable and attach the remote adapter to the opposite end. Switch the tester on and observe the nine LEDs to verify continuity and correct pair assignment; the LEDs show each conductor and the shield. Interpret non-sequential or unlit LEDs as open, shorted or miswired conductors. Replace the 9V battery when LED brightness is reduced. Use the remote adapter to test permanently installed cabling runs.

Recommendations

For reliable diagnostics, test cables before installation and after termination. Replace the 9V battery regularly and store the remote adapter with the main unit to avoid loss. Do not expose the tester to moisture or extreme temperatures.