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NOYAFA NF-820

NOYAFA NF-820 wire tracker transmitter with its alligator clip leads, on a white background

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NOYAFA NF-820

Model number:
NF-820
Detecting cable types:
Network cable, telephone cable, multi-core metal line and other metal cables
Connectors:
RJ-11 and alligator clips (clips rated to clamp a 220 V AC live line)

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Package details

Model: NF-820

NF-820 wire tracker kit, US version

Condition:
Confirm new or reconditioned on the listing
Quantity:
Confirm package quantity on the listing
Included essentials:
Emitter 0.143 kg; receiver 0.200 kg; one set 0.343 kg

Important limit: No CAT safety rating is marked; the manual warns never to use it on an energized power cord such as a 220 V supply, so treat the 400 V clamp rating per the manual only

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Specifications checked November 5, 2026. Full product details

Size and package

Size and placement

Dimensions (L×W×H)
Emitter 152 × 55 × 34 mm; receiver 252 × 45 × 28 mm; one set 262 × 135 × 60 mm
Weight (battery included)
Emitter 0.143 kg; receiver 0.200 kg; one set 0.343 kg

In the box

Emitter 0.143 kg; receiver 0.200 kg; one set 0.343 kg

Manufacturer specifications

NOYAFA NF-820 High & Low Voltage Wire Tracker

A two-part anti-jamming cable tracer for underground, in-wall, ceiling and other invisible cables and pipes, tracking energized and de-energized lines up to 2 m deep over up to 10 km, with adjustable transmitter and receiver sensitivity.

Which version should you buy?

Recorded product: NF-820 wire tracker kit, US version.

Bundles and accessories

  • NF-820 wire trackerModel: NF-820

    Contents and availability

    Buyers who need the tracer alone.

Purchase links appear where the exact offer is verified. Confirm the named model, quantity and accessories before ordering.

Watch out

  • The maker's NF-820 listing also offers the NF-826 Wire Tracer Pro as an option; that is a different, higher-spec model with an LCD and voltmeter.
  • NF-820 is not the same as NF-8209 or the NF-8209-style RJ45 network cable testers; it is a high/low voltage wire tracker.

Why people pick it

  • Traces both live (≤400 V) and de-energized cables without the signal being disturbed by nearby current, per the maker
  • Long reach: up to 10 km signal transmission and 2 m depth for in-wall, ceiling and underground runs
  • Adjustable sensitivity on both transmitter and receiver, plus an earphone for noisy environments
  • Runs on rechargeable lithium batteries or direct Micro USB power, so it works mid-shift while charging

Know before you buy

  • No CAT safety rating is marked; the manual warns never to use it on an energized power cord such as a 220 V supply, so treat the 400 V clamp rating per the manual only
  • Signal output is a tone and indicator, no LCD on either unit - only the maker's more expensive NF-826 adds a display and voltmeter
  • No data logging or app connectivity
  • About 8 hours to recharge the batteries, per the manual

Full specifications

Model numberNF-820
Detecting cable typesNetwork cable, telephone cable, multi-core metal line and other metal cables
ConnectorsRJ-11 and alligator clips (clips rated to clamp a 220 V AC live line)
Max depth2 m (per the manual, 0-2 m sensitivity distance)
Signal transmission distanceUp to 10 km
Voltage toleranceTraces both live and de-energized cable up to 400 V, with AC anti-interference mode
Signal formatMulti-frequency pulse, 21 Vp-p output level
Signal displaySpeaker tone and indicator
PowerEmitter: 3.7 V 1800 mAh lithium battery; receiver: 3.7 V 1100 mAh lithium battery; also direct power via Micro USB
Working currentEmitter ≤150 mA ±10%; receiver ≤80 mA ±10%
Charging800 mA charge current, about 8 hours for a full charge; red LED while charging, green when full
Dimensions (L×W×H)Emitter 152 × 55 × 34 mm; receiver 252 × 45 × 28 mm; one set 262 × 135 × 60 mm
Weight (battery included)Emitter 0.143 kg; receiver 0.200 kg; one set 0.343 kg
MaterialABS plus electronic parts
In the boxTone generator, amplifier probe, 2 × 3.7 V lithium battery, 5 V 1A charging adaptor, USB charging line, earphone
CertificationRoHS, FCC and CE compliance; maker certified to ISO 9001

From manufacturer documentation, checked November 5, 2026. Spotted an error? Tell us.

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