Extech MO57A Ball Probe Pinless Moisture Meter
Take fast, reliable moisture readings without leaving marks behind. The Extech MO57A Ball Probe Pinless Moisture Meter is designed for professionals who need accurate results across a wide range of materials—without damaging surfaces. Its smooth ball probe sensor glides effortlessly over floors, walls, and delicate finishes, making it ideal for inspections, restoration work, and maintenance tasks.
Whether you‘re checking for hidden damp behind walls or assessing moisture beneath flooring, the MO57A delivers clear, instant feedback with minimal effort.
Extech MO57A Key Features:
- Non-Destructive Testing
Measure moisture levels without pins or probes that can damage surfaces - perfect for finished materials and sensitive areas. - Ball Probe Sensor for Smooth Scanning
The spherical sensor design allows easy movement across uneven or delicate surfaces for consistent readings. - Deep Moisture Detection
Scan below the surface up to 100mm (4 inches) to identify hidden moisture issues before they become costly problems. - High-Contrast Colour Display
A bright, backlit LCD ensures clear visibility in both low-light and bright environments. - Wide Material Compatibility
Suitable for wood and common building materials including plaster, drywall, concrete, mortar, cardboard, and more. - Audible Moisture Alert
Built-in beeper increases in frequency as moisture levels rise—helping you identify problem areas without constantly watching the screen. - Data Hold Function
Freeze readings on-screen for easy recording and comparison.
💡 Designed for Real-World Applications
The MO57A is an essential tool for:
- Building and property inspections
- Water damage restoration
- Flooring and carpet checks
- Leak detection behind walls and ceilings
- General maintenance and renovation projects
Its non-invasive technology makes it especially useful when working on finished surfaces where traditional pin meters aren’t suitable.
Specifications
| Features | |
| Measurement Type | Pinless (capacitive, non-invasive) |
| Measurement Range | 0.1% to 99.9% relative moisture |
| Detection Depth | Up to 100mm (4") |
| Display | Backlit colour LCD with moisture level indicators |
| Resolution | 0.1% |
| Auto Power Off | After approx. 3 minutes |
| Power Supply | 3 x AAA batteries (included) |
| Operating Conditions | 5°C to 45°C |
| Weight | Approx. 170g (excluding batteries) |
✅ Why Choose the Extech MO57A?
- No surface damage – ideal for finished materials
- Fast, intuitive readings with visual and audible alerts
- Lightweight, compact, and easy to use
- Reliable results across multiple building materials
- Trusted solution for professionals and DIY users alike
❓ Frequently Asked Questions (FAQ)
Q1: Does the MO57A leave marks on surfaces?
A. No, it uses a pinless sensor, so there’s no need to puncture or damage materials.
Q2: What materials can it measure?
A. It works on wood, drywall, plaster, concrete, mortar, cardboard, and other common building materials.
Q3: How deep can it detect moisture?
A. It can measure moisture up to approximately 100mm (4 inches) below the surface.
Q4: Is it suitable for detecting leaks behind walls?
A. Yes, it’s ideal for identifying hidden moisture in walls, ceilings, and floors.
Q5: Does it have an easy-to-read display?
A. Absolutely—its high-contrast colour LCD with backlight ensures visibility in any lighting condition.
If you need a reliable, non-invasive way to detect moisture quickly and accurately, the Extech MO57A is a smart, professional-grade choice.