GREENLEE 701K Probe and Tone Generator

The Greenlee 701K (often branded under Greenlee Communications or Tempo Communications) is the global industry-standard classic tone and probe kit used by technicians to identify, trace, and troubleshoot individual wires or cables within a bundle without damaging the insulation.

1. 77HP High-Output Tone Generator: Connects directly to the wire or jack to inject a tracing signal into the cable [1].
2. 200EP Inductive Amplifier (Probe): Handheld receiver that audibly detects the tone signal moving through the wire without needing direct physical metal contact

• Dual-Tone Output: Can emit either a steady single tone or an alternating warble tone for easier identification over long distances.
• Modular & Hardwire Leads: Equipped with both a standard RJ11 telephone plug and two heavy-duty alligator clips for attaching to bare copper conductors [1].
• Line Voltage Testing: Features internal LEDs that detect telephone line polarity and determine if a circuit is dead or carrying live central office DC voltage.
• Continuity Testing: Includes a dedicated continuity mode to test for physical shorts or breaks in a wire loop.