Overview
The FR WD-01 (by FNIRSI) is a high-precision digital wall detector designed for electricians, plumbers, and DIY home renovators. Using advanced electromagnetic sensor technology, it can penetrate walls up to 120mm deep to locate steel bars, copper pipes, wooden frames, and live cables. The intuitive 3-colour indicator light and buzzer tell you exactly when to stop drilling, saving you from expensive plumbing leaks or dangerous electrical shocks.
Key Features
Multi-Mode Detection: Dedicated modes for Wood (Studs), Metal (Magnetic/Non-Magnetic), and AC Electricity.
Large Backlit LCD: Clearly displays detection depth, center point of the object, and battery status even in dark construction sites.
Smart Indicator Lights:
Green: Safe to drill.
Yellow: Something is close.
Red + Buzzer: Danger! Hidden object detected.
Ergonomic Design: Features a hole in the center of the sensor so you can mark the exact spot to drill with a pencil once the object is located.
Rechargeable Battery: Built-in 3.7V Lithium battery (Type-C charging), so you never have to hunt for 9V batteries again.
Technical Specifications
| Detection Material | Maximum Depth |
| Ferrous Metals (Rebar/Iron) | 120mm |
| Non-Ferrous Metals (Copper Pipe) | 100mm |
| Live AC Wires (110-220V) | 50mm |
| Wood (Studs) | 38mm |


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