181 CB Cable Tracer (Amplifier Probe+Tone Generator)


The Amplifier Probe 181 CB-A is designed to identify and trace wires or cables within a group without damaging the insulation.

  • Works with any Tone Generator to identify wires.
  • Volume control for increased sensitivity and adjustable to suit work environment.
  • Recessed ON/OFF button prevents battery drain.
  • A phone jack is designed for headset or handset.
  • Frequency: 1Hz~12kHz.
  • Receiver distance: < 50cm.
  • Sensitivity control.
  • Probe tip: Fixed.
  • Power source: 9V(6F22) × 1.
  • Dimensions: 230(L) × 56(W) × 27(D)mm.
  • Weight: Approx. 125g (battery included).

The Tone Generator 181 CB-G is a great tool for locating and identifying cable pairs or individual conductors. 181 CB-G does not only serve as a tone generator, but also serves as a continuity and polarity tester.

  • A tone selector switch located inside the unit for selection of the fast tone or the slow tone.
  • The continuity function is only applied to Line 1.
  • Two bi-colored LEDs for Line1 and Line2 indication of the polarities of the telephone lines.
  • The unit has alligator type terminals, a modular cable of 4 conductors with a strong connector.
  • Wave form: Square Wave.
  • Frequency: 1kHz±15%.
  • Over voltage protection: 80V DC.
  • Alternating tone: Fast and Slow.
  • Connection: RJ11 connector, alligator clip x 2, RJ45 connector (optional).
  • Power source: 9V(6F22) × 1.
  • Dimensions: 86(L)×63(W)×26(D)mm.
  • Weight (battery included): Approx. 130g.


  • Operating/Storage temp.: 0˚~40˚C/-10˚~50˚C, 80% Max.
  • Safety Standard: EN 61326-1. EN 55011. EN 6100-4-2. EN 6100-4-3.


  • Instruction manual,
  • Soft pouch,
  • Batteries.