The wall material is too thick for the standard scanning profile.
The , along with the Stanley Stud Sensor 200 (Model 77-720) , was officially recalled by the U.S. Consumer Product Safety Commission (CPSC) in April 2009.
💡 Note: If the LCD screen begins flashing or displays a "Low Battery" text alert, immediately change the battery. Weak voltage can severely compromise sensor depth accuracy. Step 2: Wall Placement & Surface Contact FatMax 400 stanley fatmax stud finder 400 manual verified
Press the Mode button twice until the “Metal” icon appears.
Do not touch the wall surface with your other hand while operating, as this can affect calibration. Step 3: Calibration The wall material is too thick for the
When the unit detects the center of a stud, an audible tone will sound, and the will appear on the LCD.
You have shifted your grip, lifting the back edge off the wall. Verified Fix: Use the "Pinky Drag" technique. Keep your pinky finger touching the wall behind the device to act as a pivot, ensuring the back remains flush throughout the scan. 💡 Note: If the LCD screen begins flashing
The Stanley Fatmax Stud Finder 400 is a versatile and reliable tool designed to help users detect studs, joists, and other hidden structures behind walls. This manual provides a comprehensive guide on how to use and maintain the device.
: Includes standard STUD mode (wood and metal profiles), METAL SCAN mode (for copper or steel pipes), and AC TRACKING mode (for detecting live electrical wires).