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Franklin Sensors Prosensor M150/X990 Stud Finder with Live Wire Detection & 9-Sensors, Wood & Metal Stud Detector/Wall Scanner

4.5 out of 5 stars 2,835 ratings

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Purchase options and add-ons

Brand Franklin Sensors
Colour Yellow
Batteries required? No
Material Plastic
Power source Battery Powered
Item weight 0.32 Pounds
Product Dimensions 14L x 7.6W x 5.1H Centimetres
Extended length 14 Centimeters
Adjustable length No
International protection rating IP54

About this item

  • Higher Accuracy, Better Technology: With 9 patented sensors, the M150 detects studs more accurately
  • Safety Live Wire Warning: The ProSensor M150 includes a live wire warning for worry-free drilling
  • Shows Full Width of Studs: The wide LED display shows the stud's center and edges simultaneously
  • Deep Scan, Always On: The ProSensor M150 auto adjusts for depth, material and texture up to 1.5 in
  • Important Info: 2 non-rechargeable AAA batteries required, not included

Frequently bought together

This item: Franklin Sensors Prosensor M150/X990 Stud Finder with Live Wire Detection & 9-Sensors, Wood & Metal Stud Detector/Wall Scanner
$69.95
Get it by Tuesday, Jul 8
In Stock
Sold by Franklin Sensors Inc. and ships from 鶹 Fulfillment.
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$44.99
Get it by Tuesday, Jul 8
In Stock
Sold by Franklin Sensors Inc. and ships from 鶹 Fulfillment.
Total price:$00
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Product details

  • Batteries ‏ : ‎ 2 AAA batteries required.
  • Is discontinued by manufacturer ‏ : ‎ No
  • Product Dimensions ‏ : ‎ 14 x 7.6 x 5.1 cm; 145.15 g
  • Date First Available ‏ : ‎ April 15 2021
  • Manufacturer ‏ : ‎ Franklin Sensors
  • Place of Business ‏ : ‎ Franklin Sensors, 6675 N Pollard Ln, Meridian, ID 83646, United States, Tel. +1 (208) 918-2403
  • ASIN ‏ : ‎ B0917TH83L
  • Item model number ‏ : ‎ ProSensor M150
  • Country of origin ‏ : ‎ USA
  • Customer Reviews:
    4.5 out of 5 stars 2,835 ratings

Product Description

stud finder

Higher Accuracy. Better Technology

The Franklin Sensors Family

stud finder against a stud

Shows the FULL WIDTH of studs

LEDs track stud center and edges simultaneously, showing single studs, double studs and irregular configurations other stud finders cannot detect.

stud finder

More Sensors = More Accuracy

Conventional stud finders have 1 or 2 sensors. The ProSensor M150 has 9 accuracy-enhancing sensors.

A pro holding a stud finder

Deep Scan Always On

One mode finds it all! Franklin Sensors stud finders auto-adjust for different walls' texture, depth and material. Works through interior sheetrock/drywall and more.

A pro holding a stud finder

Accurate and Easy

Just press and hold the button to start finding studs. No calibration required. Unlike conventional stud finders that give false readings, Franklin Sensors stud finders let you start scanning anywhere, even over a stud.

Frequently Asked Questions

stud finder against a stud

What does the center green light mean?

In certain models, the center LED will turn green to indicate the exact center of the stud.

A stud finder with a single blinking light

What does the single blinking light mean?

Several of our models now have a low battery indicator. When the battery voltage is low, the second LED from the right will flash. Replace with two brand new batteries.

a person holding a stud finder

Why do the LED lights flash when I first press the button?

In certain models, the LED lights will flash when you first press the button to assure you that the unit is on and receiving power.

Battery compartment

What batteries can I use?

The ProSensor M150 is not compatible with rechargeable batteries. For best results, use two brand new, non-rechargeable, AAA batteries (not included).

What materials do your stud finders detect through?

Sheetrock/Drywall

Our stud finders work best through a single layer of sheetrock/drywall.

Lath and Plaster

While many customers have reported success using our stud finders through lath and plaster, detection is not guaranteed due to irregularities in plaster thickness.

Incompatible Surfaces

We do not recommend using our stud finders through stucco, exterior siding, double layers of sheetrock/drywall (common in condos, townhomes and home theaters), tile, brick, concrete, wood flooring, carpet or roofing.

Product information

Technical Details

Manufacturer ‎Franklin Sensors
Place of Business ‎Franklin Sensors, 6675 N Pollard Ln, Meridian, ID 83646, United States, Tel. +1 (208) 918-2403
Item model number ‎ProSensor M150
Product Dimensions ‎14 x 7.6 x 5.1 cm; 145.15 g
ASIN ‎B0917TH83L

Additional Information

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Franklin Sensors Prosensor M150/X990 Stud Finder with Live Wire Detection & 9-Sensors, Wood & Metal Stud Detector/Wall Scanner


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Important information

Safety Information

Warns of electrical voltage

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Customer reviews

4.5 out of 5 stars
2,835 global ratings

Review this product

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Customers say

Customers like the functionality, ease of use, and accuracy of the metal detector. They mention it works well for deep scans, simplifies the job, and makes any mounting task straightforward. Customers also appreciate the clear display, saying it shows the full width of studs and the 9 sensors provide precise stud detection.

19 customers mention "Functionality"17 positive2 negative

Customers like the functionality of the metal detector. They mention it works well for deep scans up to 1.5 inches on various materials and makes it easy to find studs.

"...this thing works great! I wasn't expecting much...." Read more

"...Otherwise works great!" Read more

"The ProSensor M150 is a fantastic stud finder with excellent features that make home projects much easier. Pros: -..." Read more

"...This Franklin device is terrific. Small, easy to use, easy to read, and accurate. I've thrown away all my old Zircon and Craftsman-like sensors...." Read more

8 customers mention "Ease of use"8 positive0 negative

Customers like the ease of use of the metal detector. They mention it's simple to use, simplifies the job, and makes any mounting task straightforward and precise. Customers also say the stud and open circuits are very easy to read and use.

"...For anyone tackling home projects, this tool simplifies the job, ensures accuracy, and prioritizes safety. Highly recommended!" Read more

"...Overall, this stud finder is accurate, easy to use, and provides extra safety—highly recommend for DIY enthusiasts!" Read more

"...Makes my cheap stud finder look like a paper weight. It so easy and so accurate..." Read more

"...This Franklin device is terrific. Small, easy to use, easy to read, and accurate. I've thrown away all my old Zircon and Craftsman-like sensors...." Read more

5 customers mention "Accuracy"5 positive0 negative

Customers are satisfied with the accuracy of the metal detector. They mention it's incredibly accurate and can mark off the edge of the studs.

"...For anyone tackling home projects, this tool simplifies the job, ensures accuracy, and prioritizes safety. Highly recommended!" Read more

"...Overall, this stud finder is accurate, easy to use, and provides extra safety—highly recommend for DIY enthusiasts!" Read more

"...It so easy and so accurate Ask my jobs will look like a pro did it with construction plans and a blueprint. A must have for every home owner" Read more

"...Small, easy to use, easy to read, and accurate. I've thrown away all my old Zircon and Craftsman-like sensors...." Read more

3 customers mention "Display"3 positive0 negative

Customers like the display of the metal detector. They mention it clearly shows the full width of studs, making any mounting task straightforward and precise.

"...It clearly shows the full width of studs, making any mounting task straightforward and precise...." Read more

"...Wide LED Display: Shows studs' center and edges, making alignment a breeze. -..." Read more

"I use this stud finder at least three times a week , shows the full width of the stud and open circuits , very easy to read and use" Read more

3 customers mention "Sensor depth"3 positive0 negative

Customers appreciate the depth of the metal detector. They mention the advanced multi-sensor technology provides precise stud detection, making it easy to find studs.

"...stands out with its incredible accuracy, thanks to its advanced multi-sensor technology...." Read more

"...Pros: - High Accuracy: The 9 sensors provide precise stud detection, making it easy to find studs. -..." Read more

"Best sensor I’ve ever used and I’ve tried many...." Read more

Top reviews from Canada

  • Reviewed in Canada on June 21, 2025
    Verified Purchase
    ...this thing works great!

    I wasn't expecting much. My trusty Zircon Stud Sensor (third one I've owned over the years) was on its last legs and I was set to buy another. I've used them for work for years and I never buy the top of the line because their "center of the stud" technology never works the way they claim...the only way to actually find the real center of a stud (or beam, or pipe, or whatever is in the wall) with a Zircon in my experience is to approach it from the left, mark the wall as soon as it reads something, then approach it from the right and do the same. Manually figure out the center from those two marks....do *not* just go from left to right and mark the right edge as soon as the light goes out, because it reads differently approaching the stud than it does leaving it.

    So it seems that Zircon has changed their lineup and I couldn't find one with the features that I wanted but without all the bells and whistles that I didn't want, making me decide to try this Franklin instead.

    I've used it once...and it works just as they say it does. Very happy with it. I may even buy the best one now and keep this as a spare.
  • Reviewed in Canada on June 27, 2025
    Verified Purchase
    This stud finder is an absolute must-have! The Franklin Sensors ProSensor stands out with its incredible accuracy, thanks to its advanced multi-sensor technology. It clearly shows the full width of studs, making any mounting task straightforward and precise. A standout feature is the integrated live wire detection, which adds a crucial layer of safety, giving you peace of mind when drilling into walls. It's incredibly user-friendly, automatically adjusting for depth and material, allowing it to scan up to 1.5 inches deep. For anyone tackling home projects, this tool simplifies the job, ensures accuracy, and prioritizes safety. Highly recommended!
  • Reviewed in Canada on June 15, 2025
    Verified Purchase
    Chat gpt said it’s idiot proof but still needed the wife’s help to open the battery cover. Otherwise works great!
  • Reviewed in Canada on August 20, 2023
    Verified Purchase
    Marche bien pour Les stubs mais si si sûr par rapport à l'électricité
    One person found this helpful
    Report
  • Reviewed in Canada on April 27, 2025
    Verified Purchase
    Been using this brand for a long time now, they do stop working after a few years of dropping them, haha and I get a new one right away, no stud finder that I've had works as well
  • Reviewed in Canada on February 11, 2025
    Verified Purchase
    The ProSensor M150 is a fantastic stud finder with excellent features that make home projects much easier.

    Pros:
    - High Accuracy: The 9 sensors provide precise stud detection, making it easy to find studs.
    - Safety Feature: The live wire warning gives peace of mind when drilling, preventing accidents.
    - Wide LED Display: Shows studs' center and edges, making alignment a breeze.
    - Deep Scan: Works well for deep scans (up to 1.5 inches) on various materials and textures.

    Cons:
    - Battery Not Included: It requires 2 AAA batteries, which aren't included, so make sure to have them on hand.

    Overall, this stud finder is accurate, easy to use, and provides extra safety—highly recommend for DIY enthusiasts!
  • Reviewed in Canada on April 26, 2025
    Verified Purchase
    I like it, only regret is that I found out there is one with a built in level after I purchased this one.
  • Reviewed in Canada on March 20, 2025
    Verified Purchase
    Where was this my whole life? Wow is this thing great. Makes my cheap stud finder look like a paper weight.
    It so easy and so accurate
    Ask my jobs will look like a pro did it with construction plans and a blueprint.
    A must have for every home owner

Top reviews from other countries

Translate all reviews to English
  • Mohamed S.
    1.0 out of 5 stars waste of money
    Reviewed in Germany on November 23, 2022
    Verified Purchase
    waste of money
  • Hugo Minney
    5.0 out of 5 stars So much better than traditional stud detectors
    Reviewed in the United Kingdom on January 30, 2023
    Verified Purchase
    I've spent far too much on different stud detectors of the usual design - a screen to pinpoint the centre, and two sensors one at each side. They do their thing, but they never give me much confidence because I don't need to know the centre of the stud, I need to know how wide it is and where there's hollow and where stud.
    The Franklin does all of that through a row of LEDs, I wish I could show a video. You can see the width of the stud as a row of lit up LEDs along the length of the device, and if there's mains electricity, then the electricity lights light up to warn you.
    What would I like to see? Depth, and perhaps the depth of the plaster/ drywall. But you can't have everything (at least I don't think anyone has done that?).
    Absolutely brilliant, and although it's expensive, it's cheaper than buying 4 ordinary ones that end up not doing the job as I've done before this.
  • matthew OH
    5.0 out of 5 stars Fast delivery Good packaging Perfect product
    Reviewed in Australia on June 23, 2025
    Verified Purchase
    Fast delivery Good packaging Perfect product
  • Gérard Cura
    3.0 out of 5 stars Avis détecteur
    Reviewed in France on March 22, 2025
    Verified Purchase
    Pas efficace pour toutes les détections (chevrons).
    Report
  • Pierre Chevray
    5.0 out of 5 stars BEST stud finder I have ever used!
    Reviewed in the United States on June 15, 2025
    Verified Purchase
    This is clearly the BEST stud finder I have ever bought and/or used. I am 60 years old, do a lot of DIY, and I have used probably 5 or 6 other stud finders in my life, and this one is the best. Its horizontal orientation makes it easier to hold for extended periods of time, and it gives a clear and accurate view of the 2x4 stud as you slide the finder horizontally across the wall. I just used it to find studs behind plaster and wood lathing walls in a 103 year old house with no problem! Found the studs on the first try, and did not drill any erroneous holes at false stud locations.