KLEIN TOOLS ET140 Pinless Moisture Meter — Non-Destructive EMF Sensing, Detects to 3/4-Inch

The Klein Tools ET140 is a pinless moisture meter that non-destructively detects relative moisture levels in drywall, wood, and masonry down to 3/4-inch (19 mm).

The ET140 delivers quick, surface-friendly moisture readings using electromagnetic field (EMF) sensing so you can find leaks, water damage, or high moisture zones without puncturing materials. Designed for professionals and serious DIYers, this compact meter combines a reverse-contrast display and LED bar graph for visible results on job sites, plus simple material selection for consistent readings across drywall, masonry, hardwood, and softwood.

How does the ET140 detect moisture without pins?

The meter uses EMF technology to sense changes in a material's dielectric constant caused by moisture. That lets it read relative moisture content beneath the surface up to 3/4-inch deep without leaving marks.

• Pinless electromagnetic sensing for noninvasive tests
• Detects moisture up to 19 mm below the surface
• No puncture means no repair work after inspection

Which materials can I test with the ET140, and how do I select them?

The ET140 is calibrated specifically for drywall, masonry, hardwood, and softwood to provide more accurate relative readings across common building surfaces. Use the mode button to toggle material type before taking a measurement so the display and LED bar graph reflect the chosen calibration.

• Dedicated modes for drywall, masonry, hardwood, and softwood
• Quick mode selection with a single button press
• Consistent comparative results for routine inspections and troubleshooting

What readouts and features help me interpret results on-site?

The ET140 combines a bright reverse-contrast LCD with a nine-segment LED bar graph so you can read values in low light or at an angle. Built-in functions such as hold, low-battery indicator, and auto power-off make it practical for extended jobsite use.

• Reverse-contrast digital display for clear numeric values
• Nine-LED moisture range bar for instant visual cues
• Hold function to freeze readings, plus low-battery and auto-off safeguards

What’s included and how rugged is the ET140 for field use?

The meter ships as a ready-to-use kit including the ET140 unit, a 9V battery, and an instruction manual. The housing offers 2-meter drop protection and is built to Klein Tools’ professional standards for repeated use on worksites.

• Complete kit: meter, 9V battery, and manual
• 2 m drop protection for enhanced durability
• Compact, pocket-ready form for inspections and service calls

Who is this for? The Klein Tools ET140 is aimed at electricians, plumbers, builders, restoration technicians, property managers, and experienced homeowners who need fast, non-destructive moisture screening. It’s ideal when you want reliable comparative moisture readings across drywall, masonry, and wood without drilling or leaving test marks, and when portability, clear readouts, and jobsite durability matter.