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DEWALT 3/4 in. Stud Finder (DW0100)

4.2 out of 5 stars 3,825 ratings
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Purchase options and add-ons

Brand DEWALT
Colour Multi
Batteries required? Yes
Material Plastic, Metal
Power source Battery Powered
Item weight 0.01 Ounces
Product Dimensions 14.9L x 3.3W x 22.9H Centimetres
Battery life 1 Hours
Adjustable length Yes
International protection rating IP65

About this item

  • Center-find technology to easily find the center of the stud
  • Detection depth of 3/4 in. for wood and metal
  • AC and live wire detection for added safety
  • Constant auto-calibration to save time during use
  • Center marking channel for added convenience

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Product information

Technical Details

Manufacturer ‎DEWALT
Place of Business ‎BROOKLYN, NY, 11236 US
Part Number ‎DW0100
Product Dimensions ‎14.94 x 3.3 x 22.86 cm; 0.28 g
Batteries ‎2 AAA batteries required. (included)
Item model number ‎DW0100
Is discontinued by manufacturer ‎No
Size ‎One Size
Colour ‎Multi
Style ‎Classic
Finish ‎Brushed
Material ‎Plastic, Metal
Pattern ‎Solid
Shape ‎Rectangular
Power Source ‎Battery Powered
Voltage ‎3 Volts
Item Package Quantity ‎1
Display Style ‎LED
Included Components ‎AAA Batteries
Batteries Included? ‎Yes
Batteries Required? ‎Yes
Battery Cell Type ‎Alkaline
Average Battery Life ‎1 Hours
Item Weight ‎0.28 g
Country of origin ‎China

Additional Information

ASIN B07GLCS7YY
Customer Reviews
4.2 out of 5 stars 3,825 ratings

4.2 out of 5 stars
鶹 Rank
Date First Available Dec 14 2018

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DEWALT 3/4 in. Stud Finder (DW0100)


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From the manufacturer

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Why Dewalt

See why millions of professionals choose DEWALT. From our rich history and proven performance to our focus on innovation and technology. From 1922 to present day DEWALT continues to design and optimize professional jobsite solutions - tools, accessories - to ensure absolute confidence for the toughest conditions.

Product description

Eliminate the guesswork with this center detect Stud Finder that has a detection depth of 3/4 in. for wood and metal. While traditional stud finders locate the edge of the stud, this one locates the center for a more efficient read. The finder is constantly calibrating to save time during use. Once the stud is located, an audible alert and directional LED arrows clearly notify the user. You can easily mark the center of the stud with the center marking channel.

Top Brand: DEWALT

Highly Rated
100K+ customers rate items from this brand highly
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Important information

Safety Information

May Result In Electric Shock

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Customer reviews

4.2 out of 5 stars
3,825 global ratings

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Customers say

Customers like the functionality, ease of use, and quality of the metal detector. They mention it works well for the price, is straightforward to read, and is solidly made. Customers also appreciate the practicality, lightweight design, and appreciate the sensor to find the center of the stud. However, some customers have issues with beeping and differ on the accuracy.

54 customers mention "Functionality"44 positive10 negative

Customers like the functionality of the metal detector. They mention it works well for the price and does what it supposed to do.

"...button, but once you slowly start sweeping the wall, it will work effectively at showing you where wood studs are located...." Read more

"Great product" Read more

"Good Dewalt quality. Works well." Read more

"Excellent product, works well. Ordered this to find live wires as well to avoid accidents." Read more

17 customers mention "Ease of use"14 positive3 negative

Customers like the ease of use of the metal detector. They mention it's pretty much plug-and-play and the simplist, most accurate studfinder they've tried. Customers also say it's helpful.

"...Its use is simplified, its indications are clear and it’s reasonably accurate...." Read more

"Works well! Pretty straightforward to use" Read more

"Great quality, easy to use." Read more

"This is a pretty easy product to use, mostly accurate, only issue you might run into is putting the battery in might be a chore, but once it is in,..." Read more

15 customers mention "Quality"12 positive3 negative

Customers like the quality of the metal detector. They mention it's solidly made, reliable, and the best studfinder they've tried.

"...I have several DeWalt power tools and they all work fine and are all solidly made...." Read more

"Good Dewalt quality. Works well." Read more

"Excellent product, works well. Ordered this to find live wires as well to avoid accidents." Read more

"Used today looks kind of cheap but it works" Read more

10 customers mention "Effectiveness"10 positive0 negative

Customers like the effectiveness of the metal detector. They mention it beeps when they reach a stud, is reliable as a kids toy, and provides easy detection of metal, wood, and live wires behind the wall.

"Overall, this is an effective stud finder that beeps when you reach a stud on the wall...." Read more

"This stud finder does the job...." Read more

"...Bought this to mount a TV on the wall. Provides easy detection of metal, wood and live wires behind the wall...." Read more

"...Has sensor to find the center of the stud and electrical wire. Comes with batteries. Worth it" Read more

8 customers mention "Practicality"8 positive0 negative

Customers like the practicality of the metal detector. They mention it's a great little tool to keep in their toolbox.

"For the price this is a great add to your tools" Read more

"Very easy to read and use. An excellent tool." Read more

"Best tools" Read more

"Handy tool..." Read more

6 customers mention "Lightweight"6 positive0 negative

Customers like the lightweight design of the metal detector. They mention it's slimmer than most and fits well in their tools.

"...Its light slim and super accurate, I hit the center of every stud I was trying to drill and screw into." Read more

"Very light weight and cheap." Read more

"It is what would be expected..... it is slimmer than most and fits well in my tool pouch...." Read more

"...This stud finder is very lightweight, and does the job perfectly. Has sensor to find the center of the stud and electrical wire...." Read more

28 customers mention "Accuracy"9 positive19 negative

Customers have mixed opinions about the accuracy of the metal detector. Some mention it's very accurate and easy to use. However, others say it's unreliable for finding studs or live wires. Some say it misses the wood studs at times.

"...Does miss the wood studs at times." Read more

"...Its use is simplified, its indications are clear and it’s reasonably accurate...." Read more

"In my opinion, it is not very accurate." Read more

"Not accurate." Read more

3 customers mention "Beeping"0 positive3 negative

Customers are dissatisfied with the beeping of the metal detector. They mention it would beep at random locations then not beep there again. Some say it alarms a point at the first try, but doesn't do the job very well.

"...sensitive to electrical when it’s several inches away therefore excessive beeping. Does miss the wood studs at times." Read more

"it couldn’t do the job very well, it alarms a point at first try at the second one it didn’t show alarm, I think it was not useful." Read more

"Does not work. Finder would beep at random locations then not beep there again...." Read more

Top reviews from Canada

  • Reviewed in Canada on June 5, 2025
    Verified Purchase
    I picked this because of the DeWalt name. I have several DeWalt power tools and they all work fine and are all solidly made. This stud finder is like that too, and I also like it because it’s minimalist. Its use is simplified, its indications are clear and it’s reasonably accurate. The instructions are minimalist, too, which is maybe not so impressive. A message on the card advises the user to “read all instructions inside the card,” but the inside card has nothing to read. Just diagrams, in the Ikea style, without any writing. The only company that ever successfully pulled off Ikea-style iconic instructions is Ikea. This comes close but you’ll want to check the full instruction sheet PDF, which is easily found online although the card doesn’t mention it. The tool has an important warning indicator to show you when you’re holding it over a live AC wire in the wall. (Pro tip: Don’t drill there.) It's also useful to realize that this probes for capacitance, which can be a bit iffy, and the wall studs are edge-on to you, meaning you have to drill to hit a target maybe 1.5 inches wide. So I like to use some of those viciously powerful magnets to feel for the nails that are in the studs too, just to corroborate what the stud finder is telling me. One more thing I liked about this: It’s made in Vietnam, and I’m an ABC shopper whenever possible. So I’m calling this thing good value.
  • Reviewed in Canada on October 12, 2024
    Verified Purchase
    Overall, this is an effective stud finder that beeps when you reach a stud on the wall. The machine beeps a few times when you turn it on by holding the center button, but once you slowly start sweeping the wall, it will work effectively at showing you where wood studs are located. You will need to use the machine to check a few times (going left to right and then right to left), as sometimes the identified location of the stud is inconsistent by an inch or so, depending on the speed and direction of your measurements.
    7 people found this helpful
    Report
  • Reviewed in Canada on June 13, 2025
    Verified Purchase
    Great product
  • Reviewed in Canada on May 24, 2025
    Verified Purchase
    I find that this was not as accurate as it seems
  • Reviewed in Canada on March 26, 2025
    Verified Purchase
    Good Dewalt quality. Works well.
  • Reviewed in Canada on February 5, 2025
    Verified Purchase
    I have purchased stud finders before and been disappointed with their accuracy and glitchy performance but am really pleased with this Dewalt model. Its light slim and super accurate, I hit the center of every stud I was trying to drill and screw into.
  • Reviewed in Canada on February 4, 2025
    Verified Purchase
    Excellent product, works well. Ordered this to find live wires as well to avoid accidents.
  • Reviewed in Canada on March 12, 2025
    Verified Purchase
    works okay

Top reviews from other countries

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  • Szimon Krisztián
    5.0 out of 5 stars Quite accurate
    Reviewed in Germany on March 16, 2025
    Verified Purchase
    It's on point finding electrical wires.
    I haven't tried wood yet!
  • Jaydeescuba
    5.0 out of 5 stars Accuracy
    Reviewed in the United Kingdom on May 3, 2025
    Verified Purchase
    Great tool
  • m holland
    5.0 out of 5 stars Works well
    Reviewed in Australia on September 12, 2024
    Verified Purchase
    I tried two other stud finders on an insulated stud wall and neither worked correctly. This one found the studs easily and accurately.
  • FERNANDO A.
    5.0 out of 5 stars Útil para sondar elementos dentro da parede.
    Reviewed in Brazil on November 26, 2024
    Verified Purchase
    Bom custo benefício para uso doméstico.
    Report
  • Steven
    5.0 out of 5 stars Arrived on time
    Reviewed in the United Arab Emirates on February 21, 2024
    Verified Purchase
    Does the job