Franklin Sensors ProSensor M150/X990 9-Sensor Stud Finder, AC Wire Warning

This product works really well! I am impressed how well it finds electrical wires in the wall. Super easy to use and the quaility of the stud finder is good.

Best studfinder I've ever seen. I tried a couple of others but they weren't giving repeatable results and weren't very good at actually finding studs, which is a problem. The Franklin ProSensor X990 gives me repeatable results every time. Another feature I like is that the leds will begin to turn red in the direction of the stud you're about to go over, and then shows the center led as green when you're in the middle of the stud. Works every time and only takes a few seconds to find the stud. Plus it also has two leds shaped like lightning bolts that light up when there's a power cable in the wall that you're going over. Since I had bought a Teslong Inspect-5ft borescope and had to drill holes in the same wall for drywall anchors, I used the anchor holes to inspect behind the wall and confirmed that in two different walls that there were indeed electrical cables behind the wall. In one case it was easy to expect power due to the wall switch being in that area, but in another, there was no clear outside indication that were was a power cable behind the wall so I was surprised when the Franklin's power indicators first came on. This is now my go-to stud finder since its so quick and easy to use and always on target. Very accurate and very sensitive, but doesn't give false positives, and is even ergonomically designed so it feels comfortable while moving it across the drywall.

It's only been a day since I've had it, but it's exactly what I needed. No frills, no fuss, no headaches, just works. Shows the left and right edges of a stud and of course, the exact middle of it. Shows where electrical lines may be, so you don't accidentally shock yourself. If there's any updates, I will post it.

I have been using an old Craftsman stud finder for many years. It works well, shows approach to a stud, contact and then the departure via LEDs and audible signal for strength of the contact. I purchased this one while putting up a garage storage lift that would be holding 400 lbs. I was having issues locating floor joists reliably. Not sure if it was insulation density, duct work, pipes or what, but some areas just gave weird readings. This seemed to be the best rated item for the money, so I gave this one a go. It was definitely better in the problem areas. The false signals went away, and I was able to accurately identify the joists. Where it is worse is finding the center of the joist. With the old one, I would mark where the signal went to full reading and again when it started to decline and then split the difference. That was pretty reliably the center. I checked this new one by actually probing for the edges a few times to see exactly where it was and how close the ProSensor was. It was frequently off by about 1/4 to 1/2 inch, which seems significant for 2x lumber.

Love it. LOVE IT. Had a nightmare trying to find actual studs using one of those Chinese stud finders, it gave me false readings all over the place. Sure it was fancy with different depth readings and it claimed it could detect steel and whatever, but -- it was a nightmare to use. Threw it in the trash. Saw all the 5-star reviews on Franklin. Practically no "features", it just tells you where the stud is, and gives you a really really good indication where the center of that stud is. It's got a series of sensors, and each one lights up when it detects a density difference behind the drywall. The practical effect is that it shows five red lights when there's a stud there. You can slide it up, down, sideways, whatever, those five lights will show where the stud is. Move it side to side, and the five lights will move across the sensor, targeting exactly where the stud is. And if you move the sensor so it's centered over the stud, then a green light pops up to show you where the center is. This particular unit also senses live electrical wire behind the drywall. It doesn't give you fancy graphs or drawings like the crapola cheapo sensors; instead it just lights up a yellow "electricity" symbol if it detects live wires. You can move it up, down, and around, to narrow where the wires are. Those other sensors are like all-in-one multitools, but I've had a few and they all just suck. The Franklin is like a sledgehammer -- it does exactly what it does, it doesn't do anything else, it has one job, and it NAILS that job.

I have used this stud finder multiple times throughout the house for DIY projects, such as mounting a stair rail to the wall, wire shelf bracket holders, and foldable brackets. It has, without issue, helped me find studs and reliably mark the middle of the stud for screwing or nailing. The multiple LED marks help easily determine where a stud is and where the center of it is. It also helps with finding potential live wires, as the electrical sensor will light up if it potentially detects a wire running near it. The only issue might come down to user error if you are not accustomed to finding potential stud locations and rely solely on the device. One should make sure there isn’t a possibility of something else being behind the wall, as it will detect but not identify the item it is marking. -Simple to use -Lightweight and portable -Accurate stud finder -Good value for the price; if you can find it under $40, buy it.

This stud finder works well most of the time. I’ve only used it through mostly 1/2” and some 5/8” drywall to detect 2” wide wood studs. Five LEDs light up simultaneously to show where a 2” stud is located and when the center LED is in the center of the stud, it turns from red to green, a pretty cool feature. I cannot attest to how well it detects metal studs. The feature to detect live wires was pretty reliable though reliability seems to depend somewhat on how far from the drywall the electrician stapled the wire on the stud. Since I bought this device to primarily detect studs, I consider the live wire detection a bonus. When trying to detect a stud in a location where you can’t center the finder over the stud (such as when you’re looking for a stud right next to a window or door frame), this stud finder will light up the LEDs at the end of the finder but not until the LED moves past the edge of the stud by about a quarter inch. I was able to test all of this on a basement interior wall that had drywall only on one side of the studs - perfect for seeing how accurate this finder is. This stud finder is well made and easy to use and grip with one hand. I do believe however that it might not fare well being dropped on a hard floor (I wasn’t willing to test my theory). The surface that slides on the wall has two teflon-like strips on it that make sliding across drywall very smooth. The unit uses 2 AAA batteries which were not included. It is also always calibrated immediately after turning it on, even if you turn it on before putting it against the wall. Overall I’m satisfied with this device. I believe anyone that has ever used an electronic stud finder with only one or two sensors will truly appreciate the 15 sensors on this Franklin ProSensor M150 / X990 stud finder.

Sometimes there are inconsistent results so double check for studs with magnetic stud kinder.

Why is Franklin products so hard to get a hold of in Europe? .. this device is everything I wanted for a stud finder

I’ve tried a few stud finders before and this one is much better and far more accurate. It detects the full width of the stud rather than just the edges, which makes it much easier to see exactly where to drill. Very simple to use with no complicated calibration, just place it on the wall and move it across. The display lights up clearly when a stud is detected. Overall a very reliable tool and a big upgrade over cheaper stud sensors.

Precise and very good price

Very happy with my purchase. It's the perfect tool for a part time DIY enthusiast. It's easy to use, and I really like the green light feature that lets you know when you're in the center of a stud. The product itself feels well made and of good quality.

This stud finder is awesome. 100% better than the ones available in Home Depot, Rona or Lowe's. Detects full width of stud, electrical wires, and limited false positives. 5 star!