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  • 3 VIDEOS
Franklin Sensors Professional Stud Finder Wall ScannersFranklin Sensors Inc.
  • Franklin Sensors ProSensor M90 Stud Finder with 9-Sensors, Wood & Metal Stud Detector/Wall Scanner
  • To view this video, download

Franklin Sensors ProSensor M90 Stud Finder with 9-Sensors, Wood & Metal Stud Detector/Wall Scanner

4.4 out of 5 stars (2,305)
鶹's Choice highlights highly rated, well-priced products available to ship immediately.
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Purchase options and add-ons

  • ACCURATE: More sensors = More accuracy. Conventional stud finders have 1 or 2 sensors. The ProSensor M90 has 9, making it the most accurate stud locator on the market.
  • 1 1/2" DEEP SCAN ALWAYS ON: One mode finds it all! The ProSensor M90 adjusts for a variety of depths, materials and textures to find wall studs through sheetrock/drywall and more. No calibration is required, simply press and hold the button to begin scanning. Unlike other stud finders that give false readings, the ProSensor M90 lets you start scanning anywhere, even over a stud.
  • SHOWS THE FULL WIDTH OF STUDS: See more than just a point on the wall. The LEDs track stud center and edges, showing single studs, double studs and irregular configurations other stud finders cannot detect.
  • DETECTS WOOD AND METAL STUDS: The ProSensor M90 wall scanner identifies any change in density—wood or metal—no extra buttons required.
  • MORE INFO: Requires two AAA batteries (not included). Is NOT compatible with rechargeable batteries.
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Product details

  • Is discontinued by manufacturer ‏ : ‎ No
  • Product Dimensions ‏ : ‎ 13.67 x 6.99 x 5.08 cm; 190 g
  • Date First Available ‏ : ‎ Aug. 20 2018
  • Manufacturer ‏ : ‎ Franklin Sensors
  • ASIN ‏ : ‎ B07DPT6HSY
  • Item model number ‏ : ‎ 330995279
  • 鶹 Rank: #717 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement)
  • Customer Reviews:
    4.4 out of 5 stars (2,305)

Product Description

stud finder

Higher Accuracy. Better Technology

The Franklin Sensors Family

A hand holding a stud finder

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.

A woman holding a stud finder with flowers

More Sensors = More Accuracy

Conventional stud finders have 1 or 2 sensors. The ProSensor M90 has 9 accuracy enhancing sensors.

A pro with a stud finder

Deep Scan Always On

One mode finds it all! Franklin Sensors stud finders auto-adjust for different wall's 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.

ProSensor T9
ProSensor M90
ProSensor M150
ProSensor 710+
ProSensor M210
Customer Reviews
4.0 out of 5 stars 207
4.4 out of 5 stars 2,305
4.6 out of 5 stars 3,528
4.5 out of 5 stars 10,360
4.4 out of 5 stars 5,049
Number of Sensor 8 9 9 13 13
Detection Depth 1 1/2" 1 1/2" 1 1/2" 1 3/5" 1 7/10"
Number of LEDs 9 9 15 13 21
Built in Bubble Level no data no data no data
Live Wire Detection no data no data no data
Ruler no data no data no data no data
Pencil Caddy no data no data no data no data

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 stud finder with all lights on

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.

A stud finder and 2 batteries

What batteries can I use?

The ProSensor M90 is not compatible with rechargeable batteries. For best results, use two non-rechargeable AAA batteries.

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, wood flooring, carpet or roofing.

Product information

Technical Details

Manufacturer ‎Franklin Sensors
Part number ‎FSM9002
Item Weight ‎190 g
Product Dimensions ‎13.67 x 6.99 x 5.08 cm; 190 g
Item model number ‎330995279
Is discontinued by manufacturer ‎No
Material ‎Other
Power source type ‎Battery Powered
Item Package Quantity ‎1
Included components ‎Range
Batteries Included? ‎No
Batteries Required? ‎No
Length ‎5.38 inches
Width ‎2.75 inches
Height ‎2 inches

Additional Information

ASIN B07DPT6HSY
Customer Reviews
4.4 out of 5 stars (2,305)

4.4 out of 5 stars
鶹 Rank
Date First Available Aug. 20 2018

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Franklin Sensors ProSensor M90 Stud Finder with 9-Sensors, Wood & Metal Stud Detector/Wall Scanner


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