Review on 🔍 Stud Finder Wall Scanner - 6 in 1 Electronic Magnetic Stud Sensor Joist Drywall Wall Detector Beam Depth Finder Magnet Center Finding with LCD Display by David Berry

The device was well packed in a small box. The 9V battery is one of the positive points in my opinion. All too often 1.5V alkaline batteries, even so-called sealed batteries, leak, make messes and cause contact corrosion. The 9V battery indicates that its chemistry contains 0% mercury, which is a plus for the environment. This device offers three different levels of sensitivity for wood and metal bolts. Unfortunately, the pen mode on the backlit display icon doesn't change when sensitivity is selected, but a row of small green LEDs between the printed label icons and the mode name indicate the mode selected. You can observe the corresponding LED indicator as you toggle between rivet (3 levels), metal and AC detection. I didn't test the metal pipe mode as I didn't have an exact location for it. I guess it's enough to crawl under the sink to see if he can find the copper pipes that feed the faucet. Okay, that was laziness. I crawled under the sink and started scanning in metallic mode. This seemed to roughly indicate where I expected the copper pipe to be. The AC mode was more ambiguous to me, offering a fairly wide area of AC detection that seemed to activate when it was within 10 or 12 inches of where I expected the cord to come from the switch. Yes, there is a warning, but it may not be specific enough for your application. The magnet on the underside is used to identify whether the pen is made of wood or metal (steel/iron content). is attracted to the wall by a low-force magnet as it approaches the counter. This doesn't work like the old magnetic rod locators that used a hanging magnet to locate the nails or screws holding the drywall in place. It's also not connected to the display in any way, which would suggest it's being attracted to the nearest metal. The instructions seemed complete with step-by-step procedures for using all perception modes with caveats on what you need to know to get good scans and interpret results. Bottom line, a useful tool, but like many similar electronic stud finders I've used in the past, some calibration and scans are required to be sure where a stud, pipe, or hot AC wire is.