This article is an independent, verified user guide. Not affiliated with Stanley Black & Decker. Always cross-reference with the official product manual for your specific manufacturing run.
Press and hold the activation button. The tool will blink and beep. Do not move the tool during this calibration phase.
Continue sliding the device in the same direction. The tone will stop, and then it will sound again when you locate the stud's other edge. Mark this second location. stanley fatmax stud finder 400 manual verified
Always test on a known stud before drilling. When in doubt, use multiple stud-finding methods (magnet, knock test, or pilot hole).
Place the stud finder . Do not touch the wall with your fingers near the sensors. The manual states: “Hold the unit by the thick rubber grip only. Fingers on the faceplate affect capacitance.” This article is an independent, verified user guide
The device will warn you when the battery is low by flashing the green LED. For the most reliable results, replace the battery when you see this warning.
Stanley FatMax Stud Finder 400 Go to product viewer dialog for this item. Manual: Verified Instructions & Expert Tips The Stanley FatMax Stud Finder 400 Press and hold the activation button
Hold the stud sensor , making firm contact. Press in and hold the activation button. The unit will produce a series of tones during calibration.
