FNIRSI WD-01 / WD-02 Stud, Metal & Live Wire Scanner

Product overview

Scan before you drill, cut, or mount. The FNIRSI WD-01 / WD-02 wall scanner is designed to help locate common hidden targets—including metal, framing or other foreign objects, and energized AC wiring—behind suitable wall, floor, and ceiling surfaces. Visual center guidance, traffic-light indicators, and an audible alert make it easier to trace a target and mark a likely center point. It is useful for installers, maintenance technicians, remodelers, and careful DIY users. Detection values are supplier-stated maximums under suitable conditions, not guaranteed depths; wall material, moisture, target size and orientation, shielding, and electrical conditions can all affect results.

Key Features

• Multi-material scanning: modes for ferrous and non-ferrous metal, foreign objects such as framing, and live AC wiring.
• Center guidance: screen, color indicators, and buzzer help show target proximity and likely center position.
• Marking aid: integrated positioning hole supports repeatable marking before drilling.
• Rechargeable operation: the supplied WD-02 manual specifies a 3.7 V 300 mAh battery and USB Type-C charging.
• Adjustable interface: three sensitivity levels, selectable cm/in units, volume control, and auto-shutoff settings are documented for WD-02.

Best For / Typical Applications

• Checking likely drilling locations before mounting shelves, TVs, cabinets, and fixtures
• Tracing metal pipes, rebar, copper, framing, and energized cable routes
• Renovation, property maintenance, electrical installation planning, and general inspection

Technical Specifications

Variant Guide

• WD-01: part of the same FNIRSI wall-scanner family. Exterior, interface, specifications, and included items may differ from WD-02; review the selected variant images before ordering.
• WD-02: the model specifically documented by the supplied manual and the detailed specifications above.

Compatibility & Detection Conditions

Designed for preliminary scanning of common finished walls, ceilings, and floors. Best results require calibration on the surface before each scan and slow, repeated passes from more than one direction. Foil insulation, wire mesh, conductive surfaces, dense finishes, wet materials, static charge, grounded or shielded cable, closely spaced targets, and target orientation can reduce accuracy or cause missed or spread signals.

What’s Included

FNIRSI wall scanner in the selected model, protective storage case or bag, and user documentation. Package contents can vary by variant or production batch; confirm the selected variant images if a particular accessory is essential.

Important Limitations

• Published depths are maximum supplier-rated values under suitable test conditions, not guaranteed working depths.
• Live-wire mode is an additional warning aid only. It may not detect de-energized, shielded, grounded, deep, or weak-signal wiring.
• The supplied PDF manual specifically documents WD-02. Do not assume every WD-02 menu or specification applies to WD-01.
• This tool does not identify material with laboratory certainty and cannot prove that an area is safe to drill.

Safety & Use Notes

• De-energize circuits where practical and verify with an appropriate dedicated voltage tester before drilling or cutting.
• Calibrate on the intended surface and scan in multiple directions before marking a target center.
• Use only a suitable 5 V charger. Keep the scanner dry and clean it with a soft, dry cloth; do not use solvents.
• Do not cover the sensor areas with labels or nameplates.

Frequently Asked Questions

What can the FNIRSI WD-02 detect?

The manual documents ferrous and non-ferrous metal, foreign objects such as framing, and energized AC wiring. Performance depends strongly on the target and wall construction.

What is the maximum metal detection depth?

The supplier manual states up to 120 mm for ferrous metal and up to 100 mm for non-ferrous copper under suitable conditions.

Can it guarantee a wall is safe to drill?

No. Use it as a preliminary locating aid, then de-energize relevant circuits and confirm with appropriate trade-specific test equipment.

Why does live-wire detection sometimes miss a cable?

A cable may be de-energized, shielded, grounded, too deep, low load, or affected by conductive surfaces, moisture, or nearby metal. Turning on a connected load may strengthen the signal, but it does not replace safe electrical testing.

Are WD-01 and WD-02 identical?

No assumption should be made that they are identical. The supplied manual and the detailed specifications on this page document WD-02; review the selected WD-01 images for its interface and package.

How should I calibrate and scan?

Place the scanner flat on the surface, calibrate as directed, and move it slowly. Repeat the scan from both directions and mark both edges before estimating the center.

User Manual & Downloads

Download FNIRSI WD-02 Wall Scanner User Manual (PDF)

The uploaded multilingual PDF includes English instructions and specifically documents WD-02.

Product Image Details

Review the scanner’s detection modes, depth references, controls, alerts, and practical wall-inspection applications.