We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Yellow handheld amplifier probe with tapered tip and textured grip

SOUTHWIRE COMPANY

Southwire Amplifier Probe 58746540 measurement tool

SKU CH-5N15-HF4CE

Traces non-energised cables behind walls and identifies individual conductors with any tone generator, changing tone on shorts, and includes two AAA batteries

  • Product typeElectronic/Bench Testing
  • Traces non-energized cables behind walls with any tone generator
  • Identifies individual conductors through sensitive detection capability
  • Changes tone to confirm positive cable detection when wires shorted
  • Includes two AAA batteries for immediate operation
  • California Proposition 65 warning applies for chemical content

Identifies Cables With Any Tone Generator

The Southwire Amplifier Probe works with any tone generator to trace non-energised cables behind walls or in dense bundles. It detects individual conductors and shifts tone when wires are shorted, giving positive confirmation of the correct path. Designed for electricians and low-voltage installers who need reliable cable identification on the job site. Suitable for bench testing and field troubleshooting alike.

No Thermal Or Noise Output In Normal Use

The probe is a passive hand-held instrument that draws power only from two included AAA batteries. It produces no measurable heat, emits no audible fan noise and places negligible load on the batteries during typical tracing tasks. Operation remains consistent across the temperature ranges encountered in residential and commercial environments.

Batteries Included For Immediate Operation

Two AAA cells are supplied in the package so the tool is ready to use without a separate purchase. No software, drivers or calibration utilities are bundled or required; the device functions entirely through its analogue amplifier circuitry. The Proposition 65 notice applies to the product materials and does not affect daily handling when used as directed.

How it compares

Measured against everything we stock in Meters, Testers & Measuring Tools, at today’s prices. Recalculated every night.

Price $73.99
Pricier than about 57% of the 3,030 comparable items (median $54.99).

Specifications

Product
Brand nameSouthwire
Product typeElectronic/Bench Testing

Questions about this item

How do I start using the Southwire 58746540 amplifier probe right out of the box?

Insert the two included AAA batteries, power the probe on, then pair it with any tone generator to begin tracing non-energized cables behind walls or identifying individual conductors.

What ongoing maintenance does the Southwire 58746540 amplifier probe require?

Replace the two AAA batteries when the audio tone weakens or detection range drops; no calibration or internal servicing is needed.

What limits detection range first when I use the Southwire 58746540 amplifier probe for long periods?

Battery drain reduces amplifier gain over time, so the probe loses sensitivity on deeply buried or long cable runs before any other factor.

More in Meters, Testers & Measuring Tools

Similar items