Stanley Fatmax Stud Finder 400 Manual Online

Open the battery compartment latch located on the back or bottom handle of the tool.

A: Visit Stanley Tools’ official website → Support → Manuals → Search “S160400”. Avoid third-party sites with outdated versions.

The device operates on a standard 9-volt alkaline battery (not included).

Slide the unit horizontally across the wall. Do not lift it. stanley fatmax stud finder 400 manual

Connect the 9V battery to the terminals, ensuring correct polarity (+ and -).

: Place the unit flat against a wall where you know there is no stud . Press and hold the activation button. A series of tones will sound while the LCD shows "CALIBRATING".

Surface moisture, static electricity, or textured walls (like popcorn surfaces or heavy troweled plaster) can interfere with capacitive sensors. Open the battery compartment latch located on the

Now go hang that heavy mirror. And put the spackle away—you won't need it this time.

down throughout the entire scanning process. 3. Scanning for Studs

Let’s be honest: Most of us don’t read the manual until after we’ve drilled three unnecessary holes in the drywall. The device operates on a standard 9-volt alkaline

You must hold it down continuously during the entire scanning process. 4. Scanning the Wall

Tips & Best Practices:

Continue holding the button and slide the unit slowly across the wall surface.

As you approach a stud, the signal strength bars on the LCD screen will rise. When you reach the exact center of the stud, the center-find spotter LED will project a arrow onto the wall, and a loud audio tone will sound. Mark this spot. ⚡ AC Wire Detection Safety Feature The FatMax 400 features a continuous AC detection mode.