Wire detector FNIRSI WD-01

Renovations, shelf installation or minor finishing work do not involve the risk of damaging wires or structural elements hidden in the wall. The FNIRSI WD-01 wire detector helps you quickly find metal, wood, live wires and copper components, increasing the safety and accuracy of any project. The advanced detection module, large, easy-to-read display and intuitive signaling system make the device convenient to use for both DIYers and professionals. The compact design, rechargeable battery and wide range of applications make the WD-01 ideal for use at home, in the workshop and on the construction site.

Exact location of various materials

The FNIRSI WD-01 is equipped with a function to detect many types of materials located behind walls and floors. The device accurately locates magnetic metals such as steel or reinforcement, non-magnetic metals - including copper wires and pipes - wooden elements and live electrical wires. It works well when working with plasterboard, wood, plywood, wooden walls or solid wooden floors, detecting, among other things, wooden structural beams, light steel profiles, nails and installations hidden in walls. When it comes to electrical wires, keep in mind that the device primarily detects live wires - live wires may not be detected or their detection may be hindered by the presence of metal objects.

Deep scan

The device offers two operating modes (deep and precise), which allow you to precisely adjust the scanning method to the task. The maximum metal detection depth is up to 120 mm, and copper elements can be detected up to 100 mm, which allows the detector to easily cover typical drilling depths of 30 to 60 mm and work in more demanding applications. High accuracy is provided by a modern HPC detection module with interference reduction circuitry, which reduces false alarms and improves the accuracy of locating detected objects. An additional advantage is the central positioning hole, which allows you to accurately mark the drilling location after locating the center of the detected object.

Clear readings and intuitive operation

The FNIRSI WD-01 is easy to use, even for those who have never used similar devices before. The illuminated HD display shows information about the depth of the detected object, the type of material and its position relative to the center of detection. The light indicator system further simplifies the interpretation of the results - a green light means that the object has not been detected, while yellow and red lights signal that the target is approaching. When the device detects an object, it emits an audible signal, which becomes continuous when the exact center of the detected object is reached, allowing for precise drilling.

Robust construction

The compact body with dimensions of 138 × 68 × 22 mm fits comfortably in the hand and allows you to work both indoors and outdoors. The sides have a non-slip texture, and the body made of impact-resistant ABS plastic increases the durability of the device during daily use. The front is made of acrylic plate, and silicone buttons ensure comfortable operation. The built-in 300 mAh lithium battery can be quickly charged via the USB-C port, ensuring that the detector is always ready for your next installation, renovation or construction project.

Included in the kit

• wire detector
• USB-C cable
• storage case
• user manual

Warranty: 24 months

The text is machine translated.

It is important to know

With detectors like the FNIRSI WD-01, it's crucial to choose the right model based on the materials you're most likely to be looking for in your home or garden. The device is most beneficial for those who regularly drill into walls, renovate rooms, or want to prevent damage to hidden wiring. Before you buy, check out some of the less obvious practical aspects.

• A multi-purpose detector offers wider applicability, but before purchasing, make sure that the depth and accuracy of detection for each type of material are satisfactory for your needs.
• The compact and lightweight design makes it easy to use in tight spaces, but this may be associated with less robustness for working on construction sites or outside.
• The built-in display makes it easier to navigate when searching, but for simpler tasks, a basic notification system (LED, sound, etc.) is sufficient.
• Powering with replaceable batteries is practical for occasional use, while for more frequent use, a rechargeable version is more suitable.
• Before purchasing, check the dust and moisture resistance information if you plan to use the detector outdoors.

Source of editorial recommendations: general guidelines for product selection.

In practice

🔧 Home use and renovation

🟢 Suitable for finding electrical cables and metal pipes before drilling or home renovation.

🛠️ Working in a garage or workshop

🟡 Useful for basic tasks, but in more demanding conditions it makes sense to check whether the range and resistance are of sufficient level.

🏡 Outdoor work

🟡 For outdoor use, check dust and moisture resistance to prevent damage to the device.

📦 Narrow spaces and hard-to-reach places

🟢 Compact design allows working in confined spaces where larger detectors are not suitable.

Answers to frequently asked questions

Does the FNIRSI WD-01 detect both electrical cables and metal pipes?

The detector is designed for several types of metal objects, but before purchasing, check which materials it actually detects according to the manufacturer's official data.

What do I need to power the detector?

The correct battery type is required; check if it suits your usage mode (replaceable batteries or USB charging).

Is the detector suitable for older, thicker walls?

The detection range is limited; if you have thicker plaster or older walls, check the maximum depth that the device allows.

How does the device alert you to found objects?

The display can be done via a screen, LED or sound signal - check which solution is built into this version of the FNIRSI WD-01.

Is it suitable for outdoor use?

Dust and moisture resistance is not a given; always check official protection data when working outdoors.

Description updated: August 2026

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