A studio shot of the Klein Tools ET140 Pinless Moisture Meter against a white background. The device features a bright orange housing with a black faceplate, a digital LCD screen showing a 2.3 percent moisture reading, and three buttons for mode selection, power, and data hold.
Product infographic for the ET140 highlighting non-invasive detection of relative moisture content. The text specifies it is for use on drywall, masonry, hardwood, and softwood, and notes the device features CE certification and 2-meter drop protection.
Annotated product graphic showing the ET140 meter with callouts for its key interface features: a reverse-contrast display for easy viewing in low light, an LED bar graph for visual reference of moisture content, a mode button to toggle between material types, and a hold button to lock measurements on the display.
Educational graphic showing the ET140 scanning an area to compare relative moisture content. An arrow points from a green circle representing a dry 3.3 percent reading to the device screen, which shows a high 82.5 percent reading indicated by red LED bars on the graph.
Infographic showing the rear of the ET140 moisture meter. It highlights the large black moisture sensor pad on the top half and the battery compartment on the bottom half, noting that one 9V battery is included. A circular inset shows the tool being used to detect moisture near a water valve.
Direct rear view of the ET140 moisture meter showing the black rectangular sensor pad and the orange battery compartment cover. Engraved text on the housing lists relative moisture ranges for drywall, masonry, hardwood, and softwood.
Action shot of a worker using the ET140 pinless meter to check for leaks under a sink. The device is held against a white wall near plumbing pipes and shows a high relative moisture reading of 92.3 percent with the red LED bars illuminated.
A close-up photo of the ET140 moisture meter being used on a wooden surface. The device is set to softwood mode and displays a relative moisture reading of 6.3 percent with green LED bars on the graph.
Action shot of the ET140 moisture meter being pressed against a concrete wall. The device is set to masonry mode and displays a 30.7 percent relative moisture reading with yellow LED bars illuminated.
Action photo showing a person using the ET140 moisture meter to scan a drywall surface. The screen displays a 46.8 percent reading with the yellow and red LED bars on the graph indicating elevated moisture levels.
Close-up action shot of a person's hand using the ET140 moisture meter to scan a hardwood floor. The device is set to hardwood mode and displays a relative moisture reading of 4.5 percent with green LED bars on the graph.
Action shot showing a hand placing the ET140 moisture meter on the base of a wooden cabinet under a sink. The meter displays a relative moisture content of 7.8 percent with green LED bars illuminated on the graph.
Action shot of a person using the ET140 moisture meter to test a concrete basement wall next to exposed pink fiberglass insulation and a wooden wall stud. The device is set to masonry mode and displays a 28.7 percent relative moisture reading with yellow LED bars illuminated.
ET140 Moisture Meter (ET140) promotional video and how to
A studio shot of the Klein Tools ET140 Pinless Moisture Meter against a white background. The device features a bright orange housing with a black faceplate, a digital LCD screen showing a 2.3 percent moisture reading, and three buttons for mode selection, power, and data hold.
Product infographic for the ET140 highlighting non-invasive detection of relative moisture content. The text specifies it is for use on drywall, masonry, hardwood, and softwood, and notes the device features CE certification and 2-meter drop protection.
Annotated product graphic showing the ET140 meter with callouts for its key interface features: a reverse-contrast display for easy viewing in low light, an LED bar graph for visual reference of moisture content, a mode button to toggle between material types, and a hold button to lock measurements on the display.
Educational graphic showing the ET140 scanning an area to compare relative moisture content. An arrow points from a green circle representing a dry 3.3 percent reading to the device screen, which shows a high 82.5 percent reading indicated by red LED bars on the graph.
Infographic showing the rear of the ET140 moisture meter. It highlights the large black moisture sensor pad on the top half and the battery compartment on the bottom half, noting that one 9V battery is included. A circular inset shows the tool being used to detect moisture near a water valve.
Direct rear view of the ET140 moisture meter showing the black rectangular sensor pad and the orange battery compartment cover. Engraved text on the housing lists relative moisture ranges for drywall, masonry, hardwood, and softwood.
Action shot of a worker using the ET140 pinless meter to check for leaks under a sink. The device is held against a white wall near plumbing pipes and shows a high relative moisture reading of 92.3 percent with the red LED bars illuminated.
A close-up photo of the ET140 moisture meter being used on a wooden surface. The device is set to softwood mode and displays a relative moisture reading of 6.3 percent with green LED bars on the graph.
Action shot of the ET140 moisture meter being pressed against a concrete wall. The device is set to masonry mode and displays a 30.7 percent relative moisture reading with yellow LED bars illuminated.
Action photo showing a person using the ET140 moisture meter to scan a drywall surface. The screen displays a 46.8 percent reading with the yellow and red LED bars on the graph indicating elevated moisture levels.
Close-up action shot of a person's hand using the ET140 moisture meter to scan a hardwood floor. The device is set to hardwood mode and displays a relative moisture reading of 4.5 percent with green LED bars on the graph.
Action shot showing a hand placing the ET140 moisture meter on the base of a wooden cabinet under a sink. The meter displays a relative moisture content of 7.8 percent with green LED bars illuminated on the graph.
Action shot of a person using the ET140 moisture meter to test a concrete basement wall next to exposed pink fiberglass insulation and a wooden wall stud. The device is set to masonry mode and displays a 28.7 percent relative moisture reading with yellow LED bars illuminated.
ET140 Moisture Meter (ET140) promotional video and how to
KLEIN TOOLS

Klein Tools ET140 Pinless Moisture Meter Non-Destructive Water Leak Detector for Drywall Masonry Hardwood Softwood with Backlit LCD and Audible Alert

Only 3 left
SKU: ET140
$49.97

Description

Non-Invasive Moisture Detection: Protect Your Property from Hidden Water Damage

The Klein Tools ET140 Pinless Moisture Meter is an essential diagnostic tool for homeowners, contractors, and inspectors looking to identify hidden water issues without damaging surfaces. Utilizing advanced Electromagnetic Field (EMF) technology, this meter provides non-destructive moisture detection up to 0.75 inches deep. It is perfectly calibrated for testing drywall, masonry, hardwood, and softwood, making it ideal for pinpointing leaks behind walls, assessing subfloor conditions before flooring installation, or checking lumber for woodworking projects. The intuitive mode button allows you to switch between materials instantly, ensuring accurate relative moisture readings every time.

Engineered for clarity and durability, the ET140 features a high-visibility, reverse-contrast display paired with a nine-segment LED bar graph for quick visual references. An integrated audible alert provides immediate feedback in hard-to-reach areas where the screen might not be visible. Built to handle the rigors of the jobsite, this meter is constructed from rugged ABS plastic and is rated to withstand a 6.6-foot drop. With convenient functions like data hold, auto-power off to conserve battery life, and a low battery indicator, the ET140 is a reliable partner for preventing mold and structural damage caused by undetected moisture.

Key Features

  • Non-Destructive Sensing: Uses EMF technology to detect hidden moisture without the need for pins or surface damage.
  • Material-Specific Calibration: Optimized modes for Drywall, Masonry, Hardwood, and Softwood for enhanced accuracy.
  • Deep Scanning: Detects relative moisture content at a depth of up to 0.75 inches (19 mm).
  • High-Contrast Display: Features a bright reverse-contrast screen and a 9-LED bar graph for easy viewing in any lighting.
  • Jobsite Tough: Rugged design capable of surviving a 6.6-foot (2 meter) drop.
  • Audible Notifications: Includes an audible alert to signal moisture levels when the display is out of sight.
  • Battery Efficiency: Auto-power off function helps extend the life of the included 9V battery.

What's Included

  • (1) ET140 Pinless Moisture Meter
  • (1) 9V Battery
  • (1) Instruction Manual

Specifications

Sensor Type Pinless (Non-Destructive EMF)
Sensing Depth 0.75 Inches
Moisture Range 0% to 100% (Relative)
Display Resolution 0.1%
Accuracy +/- 4%
Sensor Size 1.25 x 2.0 Inches
Drop Protection 6.6 Feet
Overall Length 6.0 Inches
Overall Width 2.5 Inches
Overall Height 1.0 Inch
Weight 7.0 oz.
Material ABS Plastic

Pro-Tip: To get the most accurate baseline, test a "known-dry" section of the same material first. This allows you to understand the normal relative reading for your specific environment so you can easily identify where moisture levels spike, indicating a potential leak or damp spot.