Wire detector Fnirsi WD-02 with LCD display and sound alert, model WD-02

FNIRSI WD-02 wire detector. Before drilling or cutting into walls, floors or ceilings, verify what is hidden behind the surface. The FNIRSI WD-02 is a handheld wire detector with an LCD/TFT color screen and audible alerts designed to help installers, technicians and DIY users locate hidden cables, metal parts and wooden structures to reduce the risk of accidental damage.

Advantages

The device offers three detection modes (metal, live cables and wood) and uses an advanced HPC chip to increase sensitivity, speed and measurement accuracy. A TFT HD color display shows depth, position relative to center and detected material type, while LED indicators and sound alerts assist with navigation. The unit has adjustable sensitivity, a rechargeable 300 mAh lithium battery with USB-C charging, an impact-resistant ABS housing and non-slip side texture for comfortable handheld use.

Suitable for

• Locating concealed electrical cables and live wires
• Detecting metal objects such as pipes, nails or metal studs
• Finding wooden studs and hidden wooden parts behind drywall
• Pre-drilling checks during renovation, installation or repair work

Key specifications

• Detection modes: Metal, AC cable (live), Wood
• Maximum detection depths: Metals — up to 120 mm; Non-ferrous metals (e.g., copper) — up to 100 mm; AC cable — up to 50 mm; Single copper wire — up to 40 mm; Wood — 20 mm (precision) / 38 mm (depth mode)
• Display: TFT HD color screen with visual indicators of depth and position
• Alerts: LED indicators (green/yellow/red) and audible sound signals
• Adjustable sensitivity for improved positioning accuracy
• Power: Built-in rechargeable lithium battery, 300 mAh, USB-C charging
• Housing: Impact-resistant ABS with non-slip side texture and acrylic panel
• Dimensions: 138 x 68 x 22 mm
• Weight: 122 g

How to use

Switch the FNIRSI WD-02 on, select the appropriate detection mode for the material you expect (Metal, AC cable or Wood), and move the detector slowly over the surface. Monitor the TFT screen for depth and position readouts while following LED and audible signals. Reduce sensitivity to improve precision when narrowing down the exact location. After use, recharge the internal battery via the USB-C port as needed.

Usage recommendations

Perform a test scan on a known area before starting work, keep steady, overlapping passes for complete coverage, and always verify suspicious targets with a secondary method before drilling. The detector increases safety but does not replace safe work practices.