The Extech MO57A Ball Probe Pinless Moisture Meter quickly detects moisture in wood and common building materials. Its smooth ball sensor glides across surfaces for reliable readings, avoiding pin marks or surface damage. This makes it ideal for finished or delicate materials and situations where intrusive testing isn't allowed. A high-contrast colour LCD with a backlight ensures clear visibility in any lighting condition. Simple icons indicate moisture levels, while an audible alert increases in volume as moisture rises.
| Display | Backlit Colour LCD |
|---|---|
| Sensor Type | Pinless spherical sensor |
| Measurement Principle | Capacitive (non-invasive) |
| Measurement Depth | <102 mm (4 in) |
| Auto Calibration | In the open air |
| Measurement Indication | Digital, Moisture Droplet icons and Beeper for High, Medium, Low indication |
| Relative Moisture Content (Pinless) | 0.1% to 99.9% relative measurement |
| Pinless Measurement Range | Low 0.0% to 16.9% Medium: 17.0% to 29.9% High: 30.0% to 99.9% |
| Relative Moisture Content Max Resolution (Pinless) | 0.1% |
| Auto Power Off | After approx. 3 minutes |
| Battery Type | 3 x 1.5 V, AAA batteries |
| Power Consumption | < 15 mA, APO < 10 μA |
| Battery Status Indicator | 3-bar battery icon (100% to empty) Full above 4.5 V Two Lattice 4.2 V to 4.5 V One Lattice 3.9 V to 4.2 V Empty Frame 3.6 V to 3.9 V Flush Frame 3.3 V to 3.6 V Shutdown below 3.3 V |
| Operating Conditions | 5°C to 45°C (41°F to 113°F) < 80% RH |
| Storage Conditions | 0°C to 50°C (32°F to 122°F) < 85% RH |
| Operating Altitude | 2000 m (6562 ft) |
| Dimensions | 203 x 68 x 32.5 mm (7.9 x 2.7 x 1.3 in) |
| Weight | 170 g (0.37 lb) excluding batteries |
| Certifications | CE, UKCA |
| Shock | 4 feet drop per EN 61010-1 |
| Vibration | Random Vibration per MIL-PRF-28800F Class 2 |
| Electromagnetic Compatibility Standards (EMC) | EN61326-1 |
| Extech Warranty | 2 years |