Stanley Fatmax Stud Finder 400 Manual Verified [portable] -

The Stanley FatMax 400 is powered by a standard (typically a 6LR61-type alkaline battery), which is not included. To install it:

When the unit detects a stud, it will display its relative position. A "Center" icon and audible tone indicate the center of the stud. Use the built-in marking channel at the top of the unit to note the spot. Key Features & Specifications

: The scan depth of 1½ inches refers to scanning through drywall or plasterboard. Scanning through thicker or denser materials can produce inconsistent results.

Make sure you are not calibrating directly over a stud. stanley fatmax stud finder 400 manual verified

Hanging a heavy shelf or mounting a new TV can quickly become a stressful guessing game when you can't find the sturdy wooden studs behind your drywall. The is a specialized electronic tool designed to take the guesswork out of this process. This guide provides a fully verified and detailed breakdown of the device's official user manual, including its features, how to use it safely, and important instructions regarding the product's recall.

FatMax Stud Finder (specifically the FatMax 400 or related S-series models like the ) operates by using electronic sensors

Contact Stanley Customer Support at 1-800-262-2161 (verified working number as of 2025) and reference model FMHT77404. The Stanley FatMax 400 is powered by a

When the center is found, the unit will beep and typically illuminate a center-finding light or arrow.

: Detects unshielded hot electrical wires up to 2 inches (50 mm) deep to prevent accidental drilling shocks.

77-730 FatMax Stud Sensor Instruction Manual – STANLEY TOOLS. STANLEY® Tools How To Use a Stanley Stud Finder Use the built-in marking channel at the top

: Provides wood stud detection accuracy up to 1/8 inch and metal detection up to 1/4 inch. ⚠️ Critical Safety Recall Notice In 2009, certain FatMax Stud Sensor 400 (77-730) Go to product viewer dialog for this item.

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One of the most critical features of the Stanley FatMax 400 is its ability to detect live AC wiring. This is an important safety feature that helps you avoid drilling into electrical cables.