Scans up to 1.5 inches (38 mm) deep for wood and metal.
With this knowledge, you can confidently hang shelves, TVs, and cabinets—knowing your fasteners are biting into solid wood or metal studs, not just drywall.
When you reach the center of the stud, the top center LED will light up, the spotlight channel will illuminate the wall, and a continuous tone will sound. Mark this spot through the center channel. stanley fatmax stud finder 400 manual
A low battery will cause inaccurate results.
Features an LCD screen with clear, intuitive icons for detecting, calibrating, and identifying stud locations. Scans up to 1
Identifies live wires up to 2 inches (50 mm) deep.
If you encounter issues with your Stanley Fatmax Stud Finder 400, try the following: Mark this spot through the center channel
The FatMax 400 is optimized for standard 1/2-inch and 5/8-inch drywall. For double-layered drywall, move the tool slower to allow the sensors to interpret the denser mass. Wallpapered Walls
If you experience erratic readings, use this matrix to fix the issue. Potential Cause Dead or missing battery Install a fresh 9V alkaline battery. Erratic, blinking bars Calibrated over a stud Move 6 inches left/right and recalibrate. False positive readings Surface moisture or static
: Open the back compartment and connect a 9-volt alkaline battery . Calibration : Place the unit flat against the wall. Press and hold the activation button on the side.
Connect the 9V battery terminal correctly, ensuring the positive and negative poles line up.