Description
Product Overview
The Extech MO55 is a versatile moisture meter designed for accurate, non‑invasive and destructive measurements on wood, drywall, concrete, and other building materials. It combines traditional pin probes with a pinless sensor, allowing users to choose the most appropriate method for the substrate and depth required. The device measures moisture content to a depth of approximately 25 mm, delivering reliable data for restoration, construction, and preventative maintenance projects. Its compact form factor (2.6 x 1.2 x 6.7 inches) and lightweight design (4.32 oz) make it easy to carry on job sites, while the built‑in battery level indicator, measurement verification, and display lock function ensure consistent performance throughout the day. The meter ships with two AA batteries, a protective cap, two pins, and a 9 V battery for immediate use.
Usage
Whether you are a restoration specialist assessing water damage, a contractor checking moisture before installing flooring, or a homeowner performing routine inspections, the MO55 adapts to a wide range of environments. The pin mode is ideal for penetrating hard surfaces such as concrete or finished wood, while the pinless mode offers rapid, non‑destructive scanning of finished walls, ceilings, and panels. The audible tone increases in frequency as moisture levels rise, providing instant auditory feedback, and the visual icons display low, medium, and high moisture zones at a glance. This dual‑feedback system helps users make quick decisions on drying, repair, or further investigation, reducing downtime and improving project efficiency.
Why Choose Us
Extech is a trusted name in measurement technology, and the MO55 reflects the brand’s commitment to accuracy, durability, and user‑friendly design. The meter’s calibration is factory‑set for consistent results, and its rugged housing protects against drops and harsh job‑site conditions. With a 4.1‑star rating from over 750 verified customers, the MO55 has proven its reliability in real‑world applications. Additionally, Extech offers responsive technical support and a comprehensive warranty, giving users confidence that their investment is protected.
Key Features
- Dual‑mode measurement: pin for deep, destructive testing and pinless for quick, non‑invasive scans.
- Audible tone and visual icons deliver instant moisture level feedback, simplifying decision‑making on site.
- Compact, lightweight design with built‑in battery indicator and lock function for reliable, uninterrupted operation.
- Measurement depth of up to 25 mm provides accurate data for a variety of building materials.
- Comes with protective cap, pins, and batteries plus dedicated after‑sales support and warranty.
FAQ
What types of materials can the MO55 measure?
The MO55 works on wood, drywall, concrete, plaster, and most common building materials. Pin mode penetrates harder surfaces, while pinless mode scans finished surfaces without damage.
How deep can the pinless sensor detect moisture?
The pinless sensor measures moisture to a depth of approximately 25 mm, which is sufficient for most interior wall and floor applications.
Do I need to calibrate the meter before each use?
The MO55 is factory‑calibrated and does not require user calibration for routine measurements. For extreme temperature or humidity conditions, refer to the user manual for optional recalibration steps.
What is the battery life and how do I replace the batteries?
With standard AA batteries, the MO55 provides up to 200 hours of continuous use. The battery compartment is easily accessed on the back of the unit; simply open the cover, replace the batteries, and close the compartment.
Is there a warranty or support available?
Extech offers a one‑year limited warranty covering manufacturing defects, and their technical support team is available to assist with troubleshooting, calibration, and usage questions.
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