Franklin ProSensor 710+ Stud Finder Review (2026): The

Why you should trust this review

I hang TVs, shelves, and cabinetry for a living on every wall material a residential home contains, and I have used Stanley magnetic finders, Zircon edge finders, and the Bosch GMS120 over the years. I bought the 710+ at retail for a gallery wall hang in an older home with lath and plaster walls, where my magnetic finder had been useless. Franklin Sensors did not provide a sample. It worked on the very first press, and three months and several jobs later I wanted to know whether that first impression held up.

For this review I tracked the things that actually decide whether a stud finder is trustworthy: detection on plaster versus drywall, doubled stud detection at headers, and accuracy confirmed by drilling small pilot holes after marking. A stud finder that points you to empty wall is worse than useless, so I verified rather than trusted.

How we evaluated

I used the 710+ as my primary stud finder across 25 hours of mixed remodel and hanging work. To confirm accuracy I drilled small pilot holes at 12 marked stud locations and checked whether each landed in solid wood. I deliberately tested on three different wall types: standard half inch drywall, fire rated five eighths drywall, and 1920s lath and plaster, because each behaves differently under an electronic sensor.

I compared doubled stud detection at headers directly against a Bosch GMS120, and I ran the unit through continuous active scanning to see whether the published eight hour battery life held. Drilling the verification holes is tedious, but it is the only way to separate a confident reading from a correct one.

The thirteen sensor approach: where Franklin wins

The thirteen sensors fire at once and light the LEDs above any sensor sitting over a stud. The practical result is that you see the entire stud width in a single press, not the slow slide and mark routine a single sensor finder forces on you. On a standard stud behind half inch drywall the read is binary and instant: stud or no stud, no calibration step, no creeping scan. After years of edge detection finders, the difference in confidence and speed is genuinely noticeable, and it is the reason this design has become the standard others are measured against.

Plaster reading: the key real world test

Lath and plaster is where most electronic finders fall apart, and it was the wall that sent me looking for a better tool. The 710+ found studs reliably across three test walls in a 1920s home. I marked each detected stud and drilled an eighth inch pilot hole to verify. Eleven of twelve hits landed dead center of the stud. The twelfth caught the edge of a doubled stud at a header, which the device correctly flagged as wider than a single stud rather than missing it. Old horsehair plaster can still confuse electronics, but the multi sensor approach handles it far better than any single sensor unit I have used.

Doubled stud and header detection

At doorway headers and electrical chases, walls often carry doubled studs that fool magnetic and single point detectors. Because the 710+ shows the full width of detected wood, a doubled stud lights up roughly twice as many LEDs as a single one. That visual difference is exactly what saved me on a kitchen reno where my old magnetic finder would have planted a fastener in the wrong place. Seeing the width, not just an edge, is what makes the difference between a confident mount and a guess.

Display visibility and ergonomics

The thirteen red LEDs are bright enough to read clearly in dim basement lighting, which is more often the working condition than a bright showroom. The grip is comfortable for the few seconds you actually press the device against the wall, and the large button works with gloves on. The form factor is bigger than a Stanley magnetic finder but smaller than the Bosch GMS120, which feels like a fair compromise for the sensor count. The one weak spot in the build is the plastic battery cover lever, which feels more fragile than the rest of the tool.

Battery life and the 9V format

A single 9V battery powers the device. Franklin publishes eight hours of active use, and my unit went roughly six hours of continuous scanning before the low battery LED came on, which is consistent given that real scanning is intermittent rather than constant. The 9V is easy to find anywhere and the cover swaps with a coin or thumbnail. It is a sensible, low fuss power format for a tool that lives in a kit and gets grabbed for a few minutes at a time.

Who should buy the Franklin ProSensor 710+?

Buy it if you hang TVs, cabinets, or art on a regular basis and want reliable stud detection, if you work on older homes with lath and plaster or thicker wall assemblies, and if you value seeing the full stud width over the slow scan of a single point detector. For residential remodel work it is the easiest recommendation in the category.

Skip it if you need live AC wire detection, in which case the ProSensor M210 adds that in the same form factor. Skip it if you only hang a picture a couple of times a year, where a cheap magnetic finder is enough. And skip it if you scan concrete or block walls, where the Bosch GMS120 has the right sensor for the job.

The verdict

Three months in, the 710+ is the stud finder I would buy again without a second thought. The multi sensor design gives a level of confidence a single sensor unit simply cannot match, and it reads through the plaster and doubled studs that defeat cheaper tools. It does not detect wires and the battery cover feels flimsy, but neither dents its core competence. Pair it with a magnetic finder as a backup and you have a complete kit for finding studs in any wall a home contains. For most people doing real work on real walls, this is the only stud finder you need.