Model # ES5500

Internet #205489747

Ryobi Phone Works Stud Sensor


Phone Works Stud Sensor

  • Turns your smartphone into a stud finder with free mobile app
  • Accurately locates studs within 1/8 in.
  • Works with both iOS (6.0 and up) and Android (4.0 and up)
$1997 /each
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Frequently Bought Together

Product Overview

Locate center of stud with more confidence and functionality than ever before. The Ryobi Phone Works mobile app and Stud Finder device use your smartphone’s technology to transform your phone into a smart stud finder. The stud-scanning device attaches to your phone’s audio port and sends an image to your phone screen to let you locate studs behind drywall up to 3/4 in. thick. The free mobile app displays the image and notifies you when center stud is reached within 1/8 in. Simply press the one-handed, no-mess marker on the device to discretely note the spot you need. Enjoy more functional, accurate stud-finding from your smartphone with the Ryobi Phone Works Stud Finder device and mobile app. Store the Stud Finder and other Phone Works tools in the storage case (Sold Separately). Ryobi Phone Works Transform your phone into your smartest tool.

California residents: see   Proposition 65 information

  • Uses smartphone controlled calibration to locate studs under drywall up to 3/4 in. thick
  • Accurately calculates center stud within 1/8 in.
  • Features a built-in, one-handed stud marker for no-mess stud marking
  • Shows live tracking of stud location from your smartphone screen
  • Optimized for iPhone (OS 6.0 or later) and most Android phones (version 4.0 or later)
  • App available on the app store and Google play
  • Launch the phone works app on your smartphone before connecting the device to your phone; make sure the phone volume all the way up before starting
  • Includes: (1) ES5500 stud finder and (1) AAA battery
  • Great solution for all your detection needs


  • Click here for more information on Electronic Recycling Programs

Info & Guides

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Name Phone Works Stud Sensor StudSensor HD55 Stud Finder 3-in-1 Metal, Live Wire and Stud Detector MultiScanner HD800 OneStep Multi-Function Wall Scanner
Brand Ryobi Zircon Stalwart Zircon
Ratings (102) (373) (1) (50)
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Product Depth (in.)
Product Height (in.)
Product Width (in.)


Audio alert
Batteries Included
Battery Type Required
AAA Battery
Detects metal
Detects voltage
Digital Display
Hand Tool Type
Stud Sensor
Laser level included
Maximum wall thickness (in.)
Number of Batteries Required
Tools Product Type
Hand Tool

Warranty / Certifications

Manufacturer Warranty

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Customer Questions & Answers

does it detect wood studs?

Asked by: juan
Contrary to the answer that the Ryobi team gave, this device doesn't detect wood studs even if the only thing it was against was a wooden stud. This thing is useless. Get something that actually works the 1st time that you're in the store and save yourself the frustration of a 2nd trip.
Answered by: boydman
Date published: 2016-12-02

Why dosent it work on other phones.I had a note 3 and it worked great. I now have a note 5 and it doesn't work.

I have the app. I plug it in and it says it's not plugged in. I put new batteries in it, Will not let phone detect the tool at all. I Also bought heat sensor and won't work either.
Asked by: FeelIwastedmymoney
Unlike previous Note phones, the Galaxy Note 5 has custom sound filter options (for music improvement) that may be interfering with Phone Works communication. The devices you mentioned plug into the headphone jack and communicates with your phone using audible tones... if those tones are being filtered then communication will not happen properly. Try going into your system setup and look for sound filtering options that may be activated (IE. UHQ Upscaler) and turn them off. That should help... if not, please call Ryobi customer service for further troubleshooting tips 877-578-6736 or write us at - thanks!
Answered by: BearsFan
Date published: 2016-06-26

Can the stud sensor find metal studs

Asked by: mike
Hi Mike. Unfortunately you wont be able to locate metal studs with this unit. Hope this helps!
Answered by: Ryobi Tools Team
Date published: 2016-04-09

Will the finder locate a stud in a wall with insulation?

Asked by: SLH
Hi SLH, This stud finder will locate stud center in drywall up to 3/4 in. thick. Hope this helps!
Answered by: Ryobi Tools Team
Date published: 2015-10-22
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Customer Reviews

Phone Works Stud Sensor is rated 2.0 out of 5 by 102.
Rated 2 out of 5 by from I like Ryobi products very much because they are very reliable and great quality. I am not sure i... I like Ryobi products very much because they are very reliable and great quality. I am not sure if the item is working correctly or not. It kept giving me false readings and drilled some holes where there was not stud. I like the idea very much, but i had trouble connecting it to my phone. It is not compatible with my iphone 6s so I had to use and older Iphone 5 to be able to add it to the app. (same thing happened to the laser level). I think is better to invest on a more accurate device. This could be good for simple things, but not for a more regular use.
Date published: 2017-02-21
Rated 1 out of 5 by from Save yourself time and money by buying an actual stud finder. The app is garbage and painful to u... Save yourself time and money by buying an actual stud finder. The app is garbage and painful to use, won't even find the device (stud finder) after changing the battery. Good idea, just not thought out good.
Date published: 2017-05-26
Rated 4 out of 5 by from 4 Star Review Rating provided by a verified purchaser
Date published: 2017-04-20
Rated 2 out of 5 by from To complicated for the task The phone works product line is a new concept that I feel is not ready for prime time. Each product has to be registered to your smartphone and locked in with a serial number, that if your not careful you may accidentally discard as it is a flimsy piece of paper attached to the cord. You have to give Ryobi all your personal information to register the App, then activate the device. You MUST complete these steps before you can even begin to use the product. In my use of the stud sensor I found it performed poorly at finding studs in comparison to my traditional stud finder Home Depot sells (that doesn't require all the hassle!)
Date published: 2015-01-10
Rated 1 out of 5 by from Just awful Please believe the other reviewers. This thing is just bad. I love the idea and want so badly for it to work but I've spent the last 20 minutes trying to convince my phone (on the compatible list) that this stud finder is not a set of earphones. Ryobi is going to have to take this line back to the R&D level to fix the plethora of issues each device faces.
Date published: 2016-09-14
Rated 1 out of 5 by from I've found better designed tools in a Christmas cracker Please don't buy this useless piece of junk. After working unreliably at the beginning, now it doesn't work at all, even after going through the time wasting 'calibration' every time you need to use it. Online customer service is a bad joke, designed to get you to give up replying to their one a day, drip drip pointless questioning of my complaint. As an introduction to ryobi, I will never buy another product from them.
Date published: 2016-11-04
Rated 1 out of 5 by from Wow What a basic task for this to accomplish only to be turned into a very involved undertaking. I'll stick to my current method, tapping on the wall. IN SHORT, TOTAL GIMMICK
Date published: 2015-04-20
Rated 1 out of 5 by from Great concept, bad execution. Don't do what I did and think I'll try it out anyway after seeing the reviews.
Date published: 2016-11-08
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