FNIRSI WD-02 6-in-1 Rechargeable Stud Finder with TFT Display

When planning a shelf or fixture, first scan the wall to locate studs, metal, pipes, and AC wires behind the surface. The FNIRSI WD-02 combines these detection modes in one rechargeable wall scanner, helping you gather useful information before marking a drilling point.

Choose the stud, metal, or AC wire setting for the material you want to locate. Each mode offers three sensitivity levels, so you can adjust the scan to the detection task.

As you move the scanner across a wall, its display and audio alarm help identify object locations. The positioning hole gives you a practical place to mark a detected edge or center.

Practical tips

Start by selecting the mode that matches what you are trying to find: studs, metal, or AC wires. The WD-02 can automatically calibrate on the wall, and its LCD display is designed to make scanning information easy to read. Move the scanner across the area you plan to work on and use the display and sound alarm to help locate an object. The positioning hole can then help you mark the indicated edge or center.

The tool is designed for use on walls, floors, and ceilings, including surfaces such as wallpaper, painted walls, wood flooring, lath, and acoustic ceilings. Its detection depths vary by mode: up to 1.5 inches for studs, 4.7 inches for metal, and 2 inches for AC wires. Select the relevant setting and sensitivity for the scan rather than treating one mode’s depth as a general range for all materials.

Pros

The main advantage is having several detection tasks in one handheld scanner. A stud-only finder focuses on locating framing, the WD-02 also has dedicated metal and AC wire modes, making it useful when you want to check for different kinds of objects during the same home project. The three sensitivity options in each mode provide additional ways to set up a scan.

The LCD display, audio alarm, and positioning hole each support a different step: reading the scan, noticing a detection, and marking a location. For example, when preparing a wall for a fixture, you can scan the intended area, identify a location through the display and alarm, then use the hole to mark the indicated position. Rechargeable operation also avoids routine battery replacement.

Worth noting

Use the mode-specific detection depths as a practical reference when choosing the scan setting: stud detection reaches up to 1.5 inches, metal detection up to 4.7 inches, and AC wire detection up to 2 inches. The device’s stated detection targets include wood, metal, pipes, and AC wires behind walls, floors, and ceilings. Its automatic calibration is designed to work anywhere on the wall, supporting a straightforward setup before scanning.

Before you decide

What can the FNIRSI WD-02 detect? It has separate settings for studs, metal, and AC wires, and is described for locating wood, metal, pipes, and AC wires behind surfaces.

How deep can it detect objects? The stated maximum depths are 1.5 inches in stud mode, 4.7 inches in metal mode, and 2 inches in AC wire mode.

How does it help with marking a location? The LCD display and audio alarm indicate detected objects, while the positioning hole provides a place to mark an indicated edge or center.

Final verdict

The FNIRSI WD-02 is suited to home projects where you need more than a stud-only scan. Its dedicated settings for studs, metal, and AC wires, adjustable sensitivities, readable display, and marking hole bring detection and layout into one practical workflow. For locating objects before a wall, floor, or ceiling project, it offers a focused way to scan and mark the area.