Franklin Sensors ProSensor M150/X990 Stud Finder
- Material Type: Plastic
- Output Type: Digital
- Unit Count: 1
- Number Of Items: 1
Last refreshed Sep 7, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A straightforward multi-sensor stud finder that shows the whole stud rather than just an edge, with no setup required before scanning.
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ASIN: B0917TH83LModel: ProSensor M150/X990Category: Stud Finders
Overview
The Franklin Sensors ProSensor M150/X990 is a 9-sensor electronic stud finder that scans a wide strip of wall at once and lights up the full width of each stud on contact, with a built-in AC wire warning.
Where a typical electronic stud finder has one or two sensors and needs you to sweep back and forth to triangulate an edge, this one lines up nine sensors side by side so it reads a whole section of wall in a single pass, including double studs. Franklin Sensors makes it in the USA and skips the calibration step other models require.
- 9 sensors read a wide strip of wall at once
- No calibration, just press and hold to scan
- Deep scan to 1.5 inches finds wood and metal
- Built-in AC wire warning for safer drilling
Who it's for
Suited to anyone who wants a fast readout without a calibration step, including first-time users. Less suited to buyers who want the smallest single-point indicator, since the sensor array is built around scanning a wider section of standard wall.
Pros and cons
- Shows the full width of a stud, not just an edge
- No calibration step before scanning
- Detects double studs and marks the center
- Deep scan to 1.5 inches is always on
- Requires two AAA batteries, sold separately
- Not compatible with rechargeable batteries
- Larger flat sensor pad than compact single-sensor finders
Performance notes
Nine sensors arranged across the tool's face light up together as you hold it against the wall, so the LED display shows the stud's actual width rather than a single point you have to interpret. The middle LED turning green marks the center, and double studs show as two separate lit sections. Deep scan mode is always active, reaching up to 1.5 inches, and it reads both wood and metal along with a warning for live AC wires.
Specifications
| Brand | Franklin Sensors |
|---|---|
| Model | ProSensor M150/X990 |
| Dimensions & fit | |
| Item Dimensions | 5.5 × 3 × 2 inches |
| Capacity & performance | |
| Output Type | Digital |
| Construction & materials | |
| Material Type | Plastic |
| Included components | |
| Unit Count | 1 |
| Included Components | Range |
| Other details | |
| Number Of Items | 1 |
| Sensing Distance | 1.5 inches |
| Part Number | FSM15002HD |
| Style Name | Compact |
| Item Highlight | Accurate Stud Finder Wall Scanner With Electric Wire Finder, Wood and Metal Stud Detector, Made in the USA |
Frequently asked questions
How many sensors does the Franklin Sensors ProSensor M150 have?
Nine sensors arranged across the tool, which is why it shows a stud's full width instead of a single point.
Does the ProSensor M150 need calibration?
No, you press and hold the button and can start scanning anywhere on the wall, even directly over a stud.
What batteries does the Franklin Sensors M150 use?
Two AAA batteries, not included, and it is not compatible with rechargeable batteries.