Cable tester INTELLINET Model 780087 for RJ45, RJ12 and RJ11 connectors, tests wiring continuity and pin mapping

Cable tester INTELLINET Model 780087 is a handheld tool for verifying RJ45, RJ12 and RJ11 connectors. It performs wiring continuity and pin mapping checks to detect open circuits, miswires and crossed pairs. The compact, portable design makes it suitable for installation, maintenance and troubleshooting of Ethernet, telephone and network cabling in office and home environments.

Advantages

This INTELLINET cable tester provides straightforward verification of connector wiring without requiring complex setup. Its support for RJ45, RJ12 and RJ11 connectors allows the same device to be used across Ethernet and telephone cabling. The tester identifies wiring continuity and pin mapping issues, enabling technicians and installers to quickly locate breaks, miswires and crossed pairs during installation or repair.

Suitable for

• Installing and verifying Ethernet (RJ45) network cables
• Testing telephone lines and modular connectors (RJ12, RJ11)
• Troubleshooting connectivity problems in offices and homes
• Routine maintenance and verification of existing cabling

Key specifications

• Connector support: RJ45, RJ12, RJ11
• Functions: wiring continuity check and pin mapping
• Form factor: handheld, portable tester
• Intended use: installation, maintenance and troubleshooting of network and telephone cabling

How to use

Connect one end of the cable to the main unit and the other end to the remote unit or appropriate connector socket as required. Power the tester according to the manufacturer's instructions and initiate the test sequence to check continuity and pin mapping. Observe the indicator pattern or display to determine whether each conductor is continuous and correctly mapped; identify open circuits, miswires or crossed pairs based on the results. For in-wall or installed cabling, use the remote unit to test between patch panels, wall jacks and endpoint connectors.

Usage recommendations

Use the cable tester in dry indoor conditions and handle the connectors gently to avoid damaging contacts. Verify tests on both ends of a cable run when possible and repeat tests after any corrective wiring work to confirm successful repairs. Store the device in a protective case to prevent mechanical damage during transport.