Stanley Fatmax Stud Finder 400 Manual -

Before using your Stud Sensor 400, it's helpful to know its technical capabilities. This knowledge will help you interpret the results it provides.

The Stanley FatMax 400 uses electronic sensors to detect density changes behind your drywall (i.e., the edge of a wooden stud). However, it cannot tell the difference between a stud and your sweaty palm.

If you lost your quick-start guide, follow these steps exactly:

Although the OnePass feature can mark the centre in a single pass, it is still good practice to confirm the stud’s edges: stanley fatmax stud finder 400 manual

: Place the unit flat against the wall in a spot where you know there a stud. Press and hold the activation button. The word "CALIBRATING" will appear. Wait for the "Ready" Signal

: The device adjusts to the wall's density automatically upon startup to ensure accurate readings. Operating Instructions How To Use a Stanley Stud Finder

If the AC icon flashes, do not drill, nail, or cut into that specific area. 🔍 Troubleshooting Guide Before using your Stud Sensor 400, it's helpful

: For best results, scan from the opposite direction. The center of the stud should be between your two marks. Important Safety & Troubleshooting STHT77587_STHT7758 - User Manual - STANLEY® Tools

It is crucial to calibrate the sensor on a blank, dry section of the wall where there is no stud directly behind it. Avoid dense materials, wet or newly painted areas, or spots near large metal objects, as these can cause calibration errors. If you get an error or the sensor beeps immediately upon calibration, move it to a different spot and try again.

Repeat the process from the other side to find the opposite edge to determine the center of the stud. 3. Pro Tips for Better Accuracy However, it cannot tell the difference between a

To achieve the most accurate results, it is crucial to follow the proper operating procedure. Step 1: Preparation

No. But you do need to follow the rules.

Before your first use, you must install a fresh 9V alkaline battery. Brand-name, high-capacity batteries are highly recommended for the sensors to function at peak accuracy. Open the battery compartment latch on the back of the tool.

Identifies live wires up to 2 inches (50 mm) deep.