The Stanley Fatmax Stud Finder 400 is a reliable and easy-to-use tool for detecting hidden structures behind walls. By following the operating instructions and troubleshooting tips outlined in this article and the manual, you'll be able to get the most out of your stud finder and ensure accurate results.
The #1 complaint online about the FatMax 400 is "It won't stop beeping." Here is the manual's troubleshooting guide: stanley fatmax stud finder 400 manual
The Stanley FatMax 400 is a helper, not a psychic. Always use common sense—if your drill bit hits resistance immediately, stop. You might be hitting a metal plate protecting electrical wires. The Stanley Fatmax Stud Finder 400 is a