Franklin Sensors ProSensor 710+
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Summary
4.6 stars, 9,100 reviews. Contractors and homeowners agree: this is the most reliable stud finder for standard drywall. The 13-sensor array shows the full width of the stud, so you see the center without guessing. No calibration needed. Complaints focus on plaster walls (inconsistent) and the wide body not fitting in tight corners.
$50-70 Amazon, Home Depot as of April 2026
Key Specifications
| scanDepth | 1.5 in |
| modes | Stud (center detect) |
| sensors | 13 capacitive |
| display | LED array |
| power | 9V battery |
| specialFeatures | No calibration required |
Pros
- 13 sensors show the full stud width at once.
- No calibration step.
- Center detection eliminates the mark-both-edges guesswork.
- Works consistently on standard 1/2 and 5/8-inch drywall.
- Fast: slide it across the wall and the stud lights up.
Cons
- Wide body does not fit close to corners (need 2-3 inches of clearance).
- Struggles with plaster-and-lath walls.
- No metal or AC wire detection.
- 9V battery is less common than AA/AAA.
- 1.5-inch max depth limits use on double drywall.