: The sensor will not work on concrete, brick, mortar, ceramic tile, or foil-faced materials.
(Model 77-730) is an electronic tool designed to detect stud centers and live AC wires. You can access the official 77-730 FatMax Stud Sensor Instruction Manual for full details.
The recall states that the sensors can fail to calibrate properly and, as a result, may fail to detect live AC electrical wires behind a wall. This poses a serious risk of electric shock to the user. stanley fatmax stud finder 400 manual verified
The device works best on drywall. It may not work properly on thick plaster or ceramic tiles.
The Stanley FatMax 400 features a dynamic display that changes based on what is hidden inside your wall. : The sensor will not work on concrete,
| Feature | FatMax 400 | $100+ Radar Scanners | | :--- | :--- | :--- | | | ~$35-45 (Verified retail) | $80-$150 | | Drywall Depth | 1.5 inches | 2 inches | | Live Wire Warning | No (Metal mode only) | Yes (AC detection) | | Learning Curve | Low (5 mins) | Moderate | | Battery Life | 1-2 projects | 2-5 projects |
If you have plaster walls, tile backer board, or thick drywall (5/8 inch), standard mode may not work. The recall states that the sensors can fail
Watch the LCD display for the stud position indicators (arrows pointing to the center).
The Stanley Fatmax Stud Finder 400 comes with the following features:
Open the battery door located on the back of the device. Securely attach a fresh 9V alkaline battery to the terminals. Close the door firmly. Note that a "Low Battery" warning will flash across the backlit LCD screen when power drops below optimal scanning thresholds. 2. Wall Placement and Surface Prep
