Network Cable Tester OEM TM-8 Tone Generator for RJ45 and RJ11 cables

OEM TM-8 Tone Generator for RJ45 and RJ11 cables is a compact network cable tester designed to verify continuity, detect wiring faults and produce a traceable tone for cable locating. The unit supports both 8P8C (RJ45) and 6P4C/6P2C (RJ11) connectors, enabling quick checks of Ethernet and telephone cabling during installation and maintenance. It combines basic continuity testing and tone generation in a single handheld tool to help technicians identify open circuits, shorts, miswires and to trace cable runs within walls or bundles.

Advantages

The tester provides straightforward, cable-focused diagnostics without complex setup, allowing immediate verification of connector wiring and continuity. Integrated tone generation simplifies locating specific cables among multiple runs when used with a compatible probe. Compact size and simple connector jacks make it convenient to carry and use on job sites for rapid verification and fault isolation. The device’s support for both RJ45 and RJ11 reduces the need for multiple tools when working with mixed Ethernet and telephone installations.

Suitable for

• Testing Ethernet patch cords and structured cabling (RJ45)
• Checking telephone and PSTN cords (RJ11)
• Locating cable runs in walls, ceilings and cable trays using a tone probe
• On-site installation, maintenance and basic troubleshooting by technicians

Key specifications

• Connector types: RJ45 (8P8C) and RJ11 (6P4C/6P2C)
• Functions: continuity testing, wiring fault detection (open, short, miswire), tone generation for tracing
• Tone output: audible tone suitable for use with standard inductive tone probes
• Power: battery-powered for portable use
• Form factor: handheld, compact housing for field use

How to use

Connect one end of the cable to the TM-8 main unit and the other end to the remote or directly insert the single-ended connector as the test requires. Use the continuity function to verify that each conductor is correctly connected and that there are no shorts or opens. To trace a cable, switch to tone generator mode and attach the unit to the target cable; then use an inductive tone probe at the other end or along the cable run to locate the emitted tone. Replace batteries as needed and ensure connectors are seated securely before testing.

Usage recommendations

For reliable results, test cables with connectors free of dirt and corrosion, perform tests with the network powered down where safe to do so, and use a compatible inductive probe for tone tracing. Avoid using the tone function on live telecommunications lines without confirming it is safe to test.