Manual warning: If you hear a double-beep or an error tone during calibration, you likely started over a stud. Slide left or right 2 inches and start over.
: Press and hold the activation button on the side. The LCD will display "CALIBRATING" while a series of tones sound. stanley fatmax stud finder 400 manual
Once calibrated, keep the activation button depressed throughout the scan. Manual warning: If you hear a double-beep or
Since Stanley no longer always includes paper manuals, you can download the official PDF from: The LCD will display "CALIBRATING" while a series
| Display / Sound | Meaning | Solution | | :--- | :--- | :--- | | | No stud found, or wall too dense. | Re-calibrate. Move vertically 6 inches and try again. | | Fast repeating beeps | Overload / Sensor confusion. | You moved too fast. Return to start, release button, re-calibrate. | | Battery icon flashing | Low voltage. | Replace 9V battery. | | "CAL" error on LCD | Calibration failed. | You started over a stud or metal. Move 4 inches left and re-calibrate. | | Constant light on arrows | Detection of live AC or dense metal. | Stop scanning. Use a wire tracer to verify. |
The air in the living room was thick with the scent of fresh paint and the high-stakes pressure of hanging a heavy mahogany shelf. Jack gripped the Stanley FatMax 400