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Noyafa NF-820 Anti-Jamming Underground Cable Detector 0-2m Sensing Depth, 3000ft Cable Length, Tone Generator & Amplifier Probe, High/Low Voltage Wire Tracker, USB Charging, Lithium Battery
- Detect Hidden Cables:Locate live (<400V) or dead wires buried in walls, underground, ceilings, or floors. Detection range up to 2 meters (6.6 feet).
- Anti-Jamming Technology:Works reliably near live power lines or other energized equipment. No false signals from electrical interference.
- Tone Generator & Probe:Receiver emits a beep-beep-beep tone that gets louder as you approach the target cable. Headphone jack included for noisy job sites.
- USB Rechargeable:Built-in 1800mAh (Transmitter) and 1100mAh (Receiver) 3.7V Li-ion batteries. Charge via Micro USB no disposable batteries needed.
- Safe for Live Wires (Up to 220V AC):Can trace energized cables safely. Alligator clips with good insulation prevent electric shock.
- Long Signal Range:Signal transmission up to 10km (6.2 miles) trace cables up to 3000ft with ease.
- Adjustable Sensitivity:Both transmitter and receiver have 8-level sensitivity control for fine-tuning in different environments.
- Multiple Cable Types Supported:Works with power cables, coax, telephone (RJ11), network cables, and multi-core metal lines.
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Overview
Specs
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The NF-820 Anti-Jamming Underground Cable Detector is a professional-grade tool designed for electricians, network installers, and home renovators. It helps you quickly locate hidden cables inside walls, under floors, above ceilings, or buried underground without interference from nearby live wires.
Whether the cable is live (400V) or de-energized, the NF-820 delivers accurate tracing with adjustable sensitivity and audio feedback.
Key Features- Deep Detection
- Detects cables up to 2 meters (6.6 feet) deep. Ideal for underground wire tracing.
- Anti-Jamming Design
- Works in high-voltage environments (0400V) without being affected by current or other live devices.
- Audio Tone Tracing
- The receiver produces a variable do-do-do tone the loudest and clearest sound indicates the exact cable location.
- High Voltage Protection
- Safely traces 220V AC live cables without damaging the device. Alligator clips are fully insulated.
- Low Battery Indicator
- Power LED flashes when voltage drops below 3.5V; auto shut-off at 3.4V.
- USB Charging
- Both transmitter and receiver have built-in rechargeable lithium batteries. Charging indicator: red (charging) / green (full).
| SpecificationDetails | |
| Model | NF-820 |
| Detection Depth | 0 2 meters (6.6 ft) |
| Signal Transmission Distance | <10 km (6.2 miles) |
| Max Cable Tracing Length | ~3000 ft |
| Output Signal Level | 21Vp-p |
| Working Current (TX) | 150mA |
| Working Current (RX) | 80mA |
| Battery Type | 3.7V Li-ion (TX: 1800mAh / RX: 1100mAh) |
| Charging Current | 800mA |
| Dimensions (TX) | 152×55×34 mm |
| Dimensions (RX) | 252×45×28 mm |
| Weight (Total) | 0.343 kg (0.76 lbs) |
- NF-820 Transmitter ×1
- NF-820 Receiver ×1
- Red & Black Alligator Clip Cables ×1
- RJ11 Telephone Jack Adapter ×1
- Micro USB Charging Cable ×1
- User Manual ×1
- Earphone (optional) ×1
- Home renovation & wall cable tracing
- Underground power cable locating
- Telecom & network cable installation
- Coax, telephone, and multi-core cable testing
- High-voltage AC cable detection (220V)
- Do NOT use during thunderstorms risk of lightning strike.
- Always check alligator clip insulation before testing live wires.
- Remove batteries if storing the device for a long time.
- Keep device away from direct sunlight, dust, humidity, and temperatures above 40°C (104°F).
Warranty & Returns
Warranty, Returns, And Additional Information
Warranty
- Please contact the Seller directly for warranty information. Warranty information may also be found on the Manufacturer's website.
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Return Policies
- Return for refund within: 30 days
- Return for replacement within: non-replaceable
- This item is covered by Noyafa factory shop Return Policy
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