Amprobe AT-4004-A Advanced Wire Tracer

(1 customer review)

The AT-4000 Wire Tracer Series has been recalled.Learn more
  • Locates and traces live and de-energized wires in walls, floors, plastic conduit, cable shields and computer cables, without interrupting power
  • Includes one universal transmitter that automatically switches to work with either energized or de-energized systems
  • Includes clamp-on attachment that injects the signal when access to bare wires is not available
  • Receiver is not position-sensitive so it doesn’t require rotation for accurate readings
  • Pinpoints shorts, breakers, neutrals, broken wires, and ground lines
  • Does not interfere with sensitive electronic equipment, such as in hospitals and data centers
  • Offers precise sensitivity adjustment
  • Includes hard shell carrying case – CC-AT 4000, R-4000 receiver, transmitter T-4000-A, 110V pigtail – banana plug cord set C2901, alligator clips – banana plug cord set C2902, grounding test lead 25′ (7.6m) MTL-G, alligator clip for ground lead VRC-320, and user’s manual




One of the most advanced of all wire tracers, the Amprobe AT-4004-A wire tracer has all the features of the AT-4003-A, plus a clamp-on attachment to inject a signal without making contact with bare wire.

Our best wire tracer, use this electrical wire tracer for finding wires in walls and locating breakers without interrupting power. You can also use it to find energized and de-energized wires, including broken and disconnected wires, and pinpoint shorts and ground faults.


FEATURE AT-4001-A AT-4003-A AT-4004-A AT-4005-A
Traces energized wires without power interruption. Locates breakers without power interruption.
Traces unenergized wires (wire continuity and wire grounded at the end). Pinpoints shorts and ground faults.
Traces unenergized open wires (broken or disconnected wire). Pinpoints place where wire is broken.
Supplied with clamp-on attachment to inject signal without making contact with bare wire.
Supplied with battery booster to strengthen signal for open tracing.
KIT CONTAINS: AT-4001-A AT-4003-A AT-4004-A AT-4005-A
Carrying case Soft SV-1000 Hard CC-AT-4000 Hard CC-AT-4000 Hard CC-AT-4000
Receiver R-4000
Transmitter T-4000-A
110V Pigtail – banana plug cord set C2901
Alligator clip – banana plug cord set C2902
Grounding test lead 25-ft. MTL-G
Alligator clip for ground lead VRC-320
Clamp-on transmitter accessory A2202
Rechargeable battery pack B2024
Battery pack recharger B2025
Users manual
Transmitter operating voltage: 9-300V AC/DC
Operating frequency: 32.786kHz
Receiver short mode range: 20′ in air from the traced wire under test conditions
Receiver open mode range: 12′ in air from the traced wire under test conditions


What’s Included

  • R-4000 Receiver
  • T-4000-A Transmitter
  • A2202 Clamp-on Transmitter Accessory
  • C2901 110 V pigtail banana plug cord set
  • C2902 Alligator clips banana plug cord set
  • MTL-G Grounding test lead 25′ (7.6 m)
  • VRC-320 Alligator clip for ground lead
  • CC-AT 4000 Hard carrying case
  • Batteries


Datasheet »
Product Manual »

1 review for Amprobe AT-4004-A Advanced Wire Tracer

  1. Jayhojo

    Receiver is indicating on all wires in house with transmitter off.

    Working on a red tagged home with no power. Tried to find where some wires were going to. Receiver indicating on every outlet and switch. EVEN WHEN THE TRANSMITTER WAS OFF!

    ✘ No, I do not recommend this product

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