ProSensor Professional Stud Finder

An exceptionally easy-to-use and effective stud finder

ProSensor Professional Stud Finder

ProSensor Professional Stud Finder

Trying to find studs, pipes, or wiring behind drywall can be frustrating, to say the least. Basically there are two things you can do. You can pound a small nail into the wall until you hit the stud or pipe (and hopefully you won't pierce a wire), or you can use a stud finder, which is quicker, less intrusive on your walls, and safer.
The ProSensor Professional Stud Finder (710) is quite different than other stud finders on the market. Similar to other stud sensors the ProSensor will detect wood, metal and other objects behind drywall. However, while conventional electronic stud finders scan from a single point the ProSensor scans across the full width of its 7" sensor. This enables it to take readings simultaneously across the full width of a stud and the areas adjacent to to the stud.
As well, the ProSensor provides instant readings, and does so without requiring you to slide the sensor across the wall. Scanning depth is between 1" and 1-1/2" (depending on such factors as the type of wall paint or wallpaper, presence of moisture in the drywall, and the overall condition of the wall). Given that half-inch drywall panels are the standard thickness for interior walls this provides ample scanning depth.
Virtually all stud finders, and the ProSensor is no exception, have difficulty scanning lath and plaster walls and walls that are covered with metallic backed wallpaper or that have foil backed insulation.

Sensor plate  
The ProSensor weighs a mere 8 ounces (batteries installed) and measures 2" H x 3" W x 7" L. The body is made of high impact plastic, and the bottom (the sensor plate) is covered with a Teflon coating. There are two wear strips on the plate that help glide the stud finder across wall surfaces.

Powered by two AA batteries          
Two AA batteries (not included) power the ProSensor. Installing the batteries is easy - just slide the cover off the handle and pop the batteries into the carrier. Battery life will, of course, depend on how frequently, and continuously, you use the scanner. I would think that for most homeowners the batteries will self-discharge during storage rather than discharge from usage.

Foam pad provides flex       
Most walls aren't perfectly flat, particularly in older homes. In between the sensor plate and the body of the stud finder is a foam pad. It provides some flex as you press onto and move the stud finder along, the wall. This helps to keep the sensor pad in constant contact with the surface of the wall.

Array of 13 LED sensor lights        
To use the ProSensor you place it on a wall where you think a stud or pipe might be and press the sensor activator button. The sensor will immediately provide visual feedback. If none of LEDs light up, simply move the sensor to the left or right. The number of LEDs that light up indicate the relative width of the object behind the drywall. For a single stud three LED light up - the width of the three LEDs is approximately 1-1/2". The middle LED pinpoints the middle of the stud. That's pretty darn accurate.
Given such a stellar product I was surprised that the ProSensor comes with a 90-day warranty. As well, it doesn't come with a protective case, which I feel is an oversight. I also would have liked to see a live wire warning feature that indicates the presence of unshielded electrical wiring.
Still, I'm very impressed with the ProSensor. It's a foolproof tool that does exactly what it claims to do, and does it exceptionally well.


  • 2" H x 3" W x 7" L
  • 8 oz. weight
  • Powered by 2 AA batteries (not included)
  • 13 LED display lights
  • 1-1/2" scanning depth
  • One-step operation
  • Instant readout
  • FCC compliant
  • 1-year warranty
COMPANY:Franklin Sensors
PRICE:$59.95 US
SOURCE:Dealer Locator

Carl Duguay
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