Stanley Fatmax Stud Finder 400 Manual Verified [portable] May 2026

Introduction

AC Tracking: "Double-click" the AC/Metal button to enter AC Tracking mode. It will alert you to live, unshielded electrical wires within a range of 4" to 18". Troubleshooting Tips How To Use a Stanley Stud Finder stanley fatmax stud finder 400 manual verified

How to check: Open the battery cover. If you see a date code starting with "R", your unit is not defective. Cause: You are moving too fast