描述
A wall is a story. Most people read only the first page.
Behind every drywall sheet hides a plot: studs that carry the load, copper that carries the current, steel that carries the structure. The Deep Scan reads all of it before you drill a single hole. Built on FNIRSI's third-generation detection platform, this wall scanner pairs a high-definition TFT display with a new UI and three detection modes - metal, wood, and live AC wire - so the same pass that finds a wooden stud also finds the cable you must never touch. Depth readings appear on screen in real time, with yellow or red indicator lights and audible alerts that grow more insistent as you close on the target.
The WD-02 was engineered for the two moments that matter: before you drill, and after you miss. The center positioning hole lets you mark your drilling spot the instant the detector locks on, eliminating the pencil-guess that turns a perfect stud find into a shelf of regret. Three levels of sensitivity tune the scan to your wall's construction, while the HPC detection module suppresses interference from adjacent materials for faster, steadier readings. Six interface languages, a two-hour working life from the included lithium cell, and automatic shutdown after five idle minutes make it the tool that lives in the pouch, not the drawer.
This is not a stud finder. It is a map of everything hiding inside your walls.
Key Features
- ✦ Three detection modes: metal, wood, and live AC wire - one tool, three inspections
- ✦ HD TFT display with a modern UI, real-time depth and target-center indicators
- ✦ Center positioning hole for precision drilling marks on the first pass
- ✦ 3-level sensitivity adjustment and HPC anti-interference module
- ✦ Scans up to 120mm for ferrous metal, 100mm for copper, 50mm for AC wire, 38mm for wood
- ✦ 6 interface languages: English, Russian, Portuguese, Japanese, Simplified and Traditional Chinese
- ✦ 300mAh lithium battery included, ~2 hours of working time, 5-minute auto shutdown
Technical Specifications
- Model:FNIRSI WD-02
- Display:High-definition TFT with new UI
- Detection Modes:Metal / Wood / AC Live Wire
- Max Depth - Ferrous Metal:120mm
- Max Depth - Non-ferrous (Copper):100mm
- Max Depth - AC Wire:50mm
- Max Depth - Single Copper Wire (≥4mm²):40mm
- Max Depth - Wood:38mm
- Sensitivity:3 adjustable levels
- Battery:3.7V 300mAh lithium (included)
- Working Time:Approx. 2 hours continuous
- Dimensions:138 x 68 x 22mm
- Certification:CE
- Package:WD-02 scanner, manual, storage bag
Where it lives: The Deep Scan belongs in the hands of anyone who has ever held a drill and paused - home renovators hanging shelves and TV mounts, electricians tracing live circuits, kitchen and bathroom fitters working around plumbing and cable runs, and maintenance crews scanning ceilings and floors before they cut. The positioning hole makes it genuinely one-handed: scan, lock on, mark, drill. And because it distinguishes ferrous metal, non-ferrous copper, wood, and live AC independently, one pass replaces three separate tools.
Frequently Asked Questions
Q: What can this detector see inside a wall?
Ferrous metal (steel studs, rebar) down to 120mm, non-ferrous metal and copper pipes to 100mm, live AC wiring to 50mm, and wooden studs and joists to 38mm. It reports depth, target center, and material type on the TFT display.
Q: Is it safe for finding live wires?
Yes - AC detection mode is specifically designed to locate live 110-230V wiring before you drill. The buzzer and red indicator intensify as you approach the cable, and the display shows the depth.
Q: How do I mark the perfect drilling spot?
The center positioning hole is the key feature: when the indicator locks onto the target center, place your pencil in the hole and mark. No more guessing the edge from the housing edge.
Q: Which languages are supported?
Six: English, Russian, Portuguese, Japanese, Simplified Chinese, and Traditional Chinese - selectable in the new UI.
Q: How long does the battery last?
About 2 hours of continuous operation from the included 3.7V 300mAh lithium cell, recharged via USB. The unit auto-shuts-down after roughly 5 minutes idle to save power.
Q: Why do I need three sensitivity levels?
Different walls hide different things - thin drywall, plaster over brick, lath and plaster, metal studs. Lower sensitivity avoids false triggers on dense materials; higher sensitivity finds deep targets in hollow walls.
Q: Will it detect plastic pipes?
No - plastic and PVC are not detectable by this unit. It is designed for ferrous metal, non-ferrous metal, live AC wiring, and wood. For plastic pipe locations, consult building plans or use a dedicated pipe locator.
Q: Does it work on plaster or brick walls?
It performs best on drywall and wooden surfaces. On dense plaster or brick, lower the sensitivity to reduce false triggers; the HPC anti-interference module filters background noise on tricky substrates.






















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