Franklin T13 Professional Underlayment Detection Sensor: 13 precision sensors
For the DIY enthusiast tackling a weekend project, the Franklin ProSensor T13 is your reliable partner for finding studs and pipes behind drywall. This home improvement tool goes beyond basic detection to give you confidence before you drill.
Its 13 precision sensors scan a 7-inch area instantly without calibration. You simply hold the button and move it across the wall. The LED array lights up to show stud centers and edges clearly, so you avoid hitting electrical wires or plumbing. It works through up to two layers of drywall and detects objects up to 1.7 inches deep.
Use the integrated bubble level and pencil caddy for quick marking. The sensor is made in the USA with a one-year warranty. Keep the surface clean and dry for best results. This tool helps you work smarter and safer on your next home upgrade.
Features
- 7-inch measurement scanning area
- Detects up to 1.7 inches deep
- Can detect two objects simultaneously
- Works through up to 2 layers of drywall
- Instant detection with no calibration required
- LED array displays stud center and edges
- Integrated bubble level
- Pencil caddy
- 7-3/8" wide dimensions
- 2-1/4" protrusion from wall
- Operates with 2 AA batteries (non-rechargeable)
- Storage temperature: 0°F to 120°F
- Operating temperature: 32°F to 110°F
- Operating humidity: 0% to 90% non-condensing
- FCC Part 15 Class B compliant
- 1-year replacement warranty for DIY use
- Made in the USA
- Includes safety warnings for electrical/gas/water hazards
- Not recommended for tile, flooring, roofing, or exterior applications
- May not work reliably on lath and plaster walls with metal mesh
- Avoid use with foil-backed insulation or metallic wallpaper
- Requires clean, dry surface for operation
- Button must be held continuously during scanning
- Handle-only grip required for accurate operation
- Low battery indicator (second LED from right flashes)
- 13 precision sensors
General specs
- Brand: Franklin
- Model: T13
- Seller: Joom
- ID: 68f5f481cf49c0019a589963
- User Level: professional
- Recognition: nationally recognized
- Product Name: Franklin ProSensor T13
- Product Type: underlayment sensor
- Detection Type: underlayment detection
- Included Documentation: Japanese instruction manual
- First listed by seller: 12/6/25
If you are interested in more details, you can find full information on the seller's page.
Shipping options
United States
Comparison with similar products
| This item | Recommendations | |||||
|---|---|---|---|---|---|---|
Franklin T13 13 precision sensors
|
X-Sense SWS0A41 Black App alerts for remote leak detection
|
METAK WD61x1 White Drip & leak alerts with 4 rear and 2 front probes
|
SwitchBot W4402010 White Real-time app and email alerts
|
SwitchBot W4402000 White Real-time notifications via Wi-Fi without hub
|
Baldr VC-HCS016ARF-3-HWG023WRF White Real-time email and APP alerts
|
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| Brand | Franklin | X-Sense | METAK | SwitchBot | SwitchBot | Baldr |
| Model | T13 | SWS0A41 | WD61x1 | W4402010 | W4402000 | VC-HCS016ARF-3-HWG023WRF |
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| Price | $122.64 | $49.99 | $9.99 | $16.99 | $39.99 | $14.99 |
| Seller | Joom | Amazon | Amazon | Amazon | Amazon | Amazon |
| Update | December 16, 2025 | December 9, 2025 | December 9, 2025 | December 9, 2025 | December 9, 2025 | December 9, 2025 |
| Detection Type | underlayment detection | Water Leak | Water Leak | Water Leak, Water Level | Water Leak | Water Leak |
| Material | Plastic | ABS | Plastic | ABS | ||
| IP Rating | IP67 | IP66 | IP67 | IP67 | IP66 | |
| Alarm Type | Sound, Light | Sound, Light | Sound | Sound | Sound | |
| Dimensions | 77, 17, 77 | 83.82, 30.48, 71.12 | 32, 78, 29 | 17.78, 88.9, 88.9 | ||
| Item Weight | 17 | 68 | 259 | <num1>, <num2> | ||
| Sound Level | 100 | 100 | 100 | 100 | 100 | |
| Battery Type | Alkaline | Alkaline | Alkaline | Alkaline | Alkaline | |
| Connectivity | Wi-Fi | Wi-Fi | Wi-Fi | Wi-Fi | ||
| Hub Required | Yes | No | No | No | No | |
| Power Source | Battery | Battery | Battery | Battery | Battery | |
| Sensors Included | 4 | 1 | 1 | 3 | 3 | |
| Notification Type | App Notification | App Notification | App Notification | App Notification | ||
| Batteries Included | Yes | Yes | Yes | Yes | Yes | |
| Smart Home Compatibility | Amazon Alexa, Google Home | Amazon Alexa, Google Home | Amazon Alexa, Google Home | eWeLink | ||
