Tools
Klein Tools
Klein Tools ET140 Pinless Moisture Meter
A pinless meter that helps compare relative moisture in drywall and other compatible materials without immediately making holes in the surface.
Price, rating, availability, and delivery details are shown on Amazon. Sentinel publishes those figures only after an administrator verifies them.
Readings are relative, not absolute. Building materials, construction differences, and objects behind drywall can affect what the meter shows.
A moisture meter does not identify the cause of the moisture, and it is not a roof, plumbing, HVAC, or mold detector. Do not use it on or near live electrical circuits or wet electrical equipment.
Read why Sentinel recommends this below. Buying options are at the end of the page.
Installation difficulty
Easy
Estimated time
15 minutes
Warranty
Not applicable
Why we recommend it
A pinless meter that helps compare relative moisture in drywall and other compatible materials without immediately making holes in the surface. It is most useful for surfaced when a homeowner is investigating a ceiling or wall stain and wants to compare an affected area with nearby material that appears dry.. Compatible with readings are relative, not absolute. building materials, construction differences, and objects behind drywall can affect what the meter shows..
When you’ll need it
- • Before starting a repair you intend to do yourself
- • When diagnosing rather than guessing
- • During seasonal inspections
Who benefits most
- • Hands-on homeowners
- • First-time homeowners building a basic kit
Before you buy
Honest guidance — you may not need this at all
- • If you'd only use it once, borrowing or renting is a perfectly good answer.
Read the manufacturer's instructions once before you start — most homeowner mistakes happen in the first five minutes.
What it does
Maintenance tips
Frequently asked questions
Related articles
Where this product is discussed in the Sentinel Resource Center.
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If this product fits your home's needs, you can purchase it through one of our trusted retail partners.
Why this matters
Spending $25–$75 today on preventive maintenance can often help homeowners avoid repairs that cost hundreds or even thousands of dollars later. Sentinel Home recommends products that support long-term home protection — not impulse purchases.
- Retailer:
- Amazon
- Last verified:
- Aug 30, 2026