Franklin Sensors ProSensor M210 Stud Finder
- Material Type: Plastic
- Item Weight: 0.71 pounds
- Output Type: Push Button
- Mounting Type: Wall Mount
Last refreshed Sep 7, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A wide-sensor scanner with a genuinely useful live wire warning, backed by consistently positive owner feedback on accuracy.
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ASIN: B0917VXLDKModel: ProSensor M210Category: Stud Finders
Overview
The Franklin Sensors ProSensor M210 is a 13-sensor wall scanner that adds live wire detection to Franklin's full-width stud display, with a deep scan mode rated to about 1.7 inches into wood or metal.
The M210 is built on the same 13-sensor array as Franklin's ProSensor 710+, lighting up across a stud's full width instead of a single point, but it adds live wire detection and a pencil caddy that model does not have. Unlike that model, it is listed as compatible with rechargeable AA batteries.
- 13-sensor wide-array scanning
- Live wire detection
- Deep scan to about 1.7 inches
- Bubble level and pencil caddy built in
Who it's for
Homeowners and repeat DIYers who want to see a stud's full width and center on one pass while also getting a warning on live wiring before cutting into a wall.
Pros and cons
- Full stud width and center display
- Live wire detection built in
- Compatible with rechargeable AA batteries
- Built-in bubble level and pencil caddy
- Batteries not included
- Occasional false readings reported until re-swept
- No calibration option if a reading looks off
Performance notes
Like the 710+, the M210's 13 sensors read a wide strip of wall so the LED display can show a stud's full width and mark its center, with no calibration needed before scanning. Its deep scan mode is rated to about 1.7 inches and covers both wood and metal, and it adds live wire detection so the display flags energized wiring in the same pass. It runs on two AA batteries, not included, and unlike the 710+ it is listed as compatible with rechargeable batteries.
Where it stands among stud finders
- #3 most-searched brand and model of the 16 stud finders lines we track (by search demand, not sales).
From the specs of the 37 stud finders we list; not a test result.
Specifications
| Brand | Franklin Sensors |
|---|---|
| Model | ProSensor M210 |
| Dimensions & fit | |
| Item Weight | 0.71 pounds |
| Item Dimensions | 7.5 × 3.4 × 3.3 inches |
| Capacity & performance | |
| Output Type | Push Button |
| Lower Temperature Rating | 32 °F |
| Upper Temperature Rating | 110 °F |
| Power & efficiency | |
| Maximum Supply Voltage | 3 volts |
| Construction & materials | |
| Material Type | Plastic |
| Compatibility & installation | |
| Mounting Type | Wall Mount |
| Included components | |
| Unit Count | 1 |
| Included Components | Range |
| Other details | |
| Number Of Items | 1 |
| Sensing Distance | 1.7 inches |
| Part Number | FSM21012HD |
| Style Name | Compact |
| Item Highlight | High-Accuracy Stud Finder Wall Scanner, Wood and Metal Stud Detector, Made in the USA, Shows Full Width of Studs |
| Specific Uses For Product | Wall Drilling Jig Electrician |
| Measurement Accuracy | 1.7 |
| Current Rating | 150 milliamps |
Closest rivals on specs
Zircon MultiScanner A200 Stud Finder- Item Weight 0.71 vs 0.82 pounds (-13%)
PREXISO 2-in-1 Stud Finder with Laser Level- Item Weight 0.71 vs 0.6 pounds (+18%)
BOSCH GMS120-27 Wall Scanner- Item Weight 0.71 vs 0.86 pounds (-17%)
Frequently asked questions
Does the Franklin ProSensor M210 detect live wires?
Yes. It adds live wire detection to the same 13-sensor stud display used on Franklin's other ProSensor models.
Can I use rechargeable batteries in the M210?
Yes. Unlike Franklin's ProSensor 710+, the M210 is listed as compatible with rechargeable AA batteries.