Stanley Fatmax Stud Finder 400 Manual Verified Official

: "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

Contact Stanley Customer Support at 1-800-262-2161 (verified working number as of 2025) and reference model FMHT77404. stanley fatmax stud finder 400 manual verified

: If there is no "R," contact Stanley Customer Support at 1-866-215-1132 for a replacement. Tips for Accuracy How To Use a Stanley Stud Finder : "Double-click" the AC/Metal button to enter AC