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 Pinless Moisture Meter ET140 Leak Detector (0.75 Depth Non-Destructive EMF Drywall Masonry Hardwood Softwood Backlit LCD Auditor Tester)

Only 2 left
SKU: ET140
$49.97 USD

Description

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Commercial-Grade Non-Destructive Water Leak Inspector with Advanced EMF Scanning and High-Contrast Visual Matrix Display

The Klein Tools ET140 Pinless Moisture Meter delivers professional-grade diagnostic velocity when scanning interior structural drywall panels, aggregate masonry facades, finish hardwoods, and building softwoods. Engineered with advanced Electromagnetic Field (EMF) wave technology, this trade-focused testing instrument evaluates internal relative moisture content up to a 0.75-inch sensing depth without causing structural face blemishes or pin punctures. The rugged structural frame utilizes an integrated 9-LED bar graph and a high-visibility reverse-contrast display screen to provide immediate comparative metrics, solving hidden structural rot and mold-breeding pipeline leak tracking challenges. Certified to survive a heavy 6.6-foot impact drop, this compact scanning unit incorporates audible tone alerts to guide inspectors working across tight overhead framing layouts or low-light crawlspace subfloors.

Best Used For:

  • Subfloor Moisture Auditing: Assessing structural concrete subfloors and framing plywood moisture levels before laying down premium hardwood or engineered tile planks.
  • Hidden Pipeline Leak Tracking: Pinpointing active plumbing pipe breaks and insulation leaks situated behind finished drywall sheets and plaster walls without surface puncture damage.
  • Woodworking Stock Verification: Evaluating internal moisture saturation parameters across rough lumber, softwood studs, and premium hardwood boards before commencing carpentry milling.

Key Performance & Safety Features

  • Non-Destructive Sensor Pad: Utilizes flat backplane EMF transmission fields to monitor subsurface moisture variations safely without pin holes.
  • Targeted Material Calibration: Programmed button presets modify scanning frequency parameters instantly for drywall, masonry, hardwood, and softwood core densities.
  • Simultaneous Signal Arrays: Audio indicator tones supplement the bright digital display to broadcast instant hazard alerts in blind structural corners.
  • 6.6-Foot Impact Defense Casing: Ruggedized external housing shields fragile digital circuits from unexpected drop acceleration damage.
  • Automatic Battery Optimization: Internal firmware tracks idle duration to shut down system operations automatically, preserving cell voltage lifespans.

What's Included

  • (1) ET140 Pinless Moisture Meter
  • (1) Heavy-Duty 9V Block Battery
  • (1) Step-by-Step Instruction Manual

Technical Specifications

Specification Value
Brand Klein Tools
Model Number ET140
Sensor Type Pinless (Non-Destructive EMF)
Maximum Sensing Depth 0.75 in
Relative Moisture Range 0% to 100% (Relative)
Display Resolution Increment 0.1%
Accuracy Rating Range +/- 4%
Sensor Pad Dimensions 1.25 x 2.0 in
Drop Protection Spec 6.6 Feet (2 Meters)
Overall Housing Length 6.0 in
Overall Housing Width 2.5 in
Overall Housing Height 1.0 in
Net Instrument Weight 7.0 oz

Pro-Tip: To ensure top measurement fidelity when tracking moisture inside walls, firmly seat the backplate pad completely flush against the target structural material. Avoid shifting or dragging the device chassis across rough stone profiles to preserve the sensor skin layer while tracking line targets accurately.