The compact Extech MO55 takes quick Moisture level reference measurements (in percent %) on wood and building materials. The Extech MO55 can be used in pinless mode (rear sensor) or in pin mode. The MO55 is simple to operate and offers measurement digits, audible tones and ‘moisture drop’ icons to indicate moisture level content.
The MO55 is ideal for building restoration projects and applications where moisture detection on floors and under carpets is critical. The ExtechMO55 is a great tool for analyzing the after‐effects of water leakage behind walls and in ceilings.
Extech MO55 Moisture Meter Features:
- Displays moisture level in wood and building materials such as wall board, sheet rock, cardboard, plaster, concrete, and mortar
- Pinless moisture measurement depth to <25mm
- Audible Alert — Tone rate beeps faster as the moisture level increases
- Icons display low, medium and high levels of moisture content
- Easy-to-use, compact-sized design
- Data Hold freezes reading on display
- Built-in battery level check and measurement verification test
- Auto Power Off conserves battery power
- Complete with pins (2), protective cap, and 9V battery
Display LCD with multi‐function indicators
Measurement type Relative Moisture Content (%)
Measurement principle Electrical resistance (pins), Electrical capacitance internal sensor (pinless)
Measurement depth Pinless mode: < 25mm
Auto Calibration Pinless mode in open air
Measurement indication Digital, “Droplet icons” (1, 2, or 3 droplets) & audible tone with 8 levels of intensity indicating low to high readings
Measurement ranges :
PIN MODE 5.0~50.0% (wood), 1.4~33.0% (building materials);
PINLESS MODE 0.0~99.9% (for wood and building materials)
Accuracy (Pin mode) ± (3% + 5 digits) for ambient conditions 22 °C to 25 °C
Electrode pin length 0.3” (8mm)
Electrode pin type Stainless steel. Integrated, replaceable
Auto Power OFF After approx. two (2) minutes
Power supply One (1) 9V Battery (rear compartment)
Consumption < 40mA
Low Battery indication Battery status icon appears empty or flashing
Operating conditions 5~45°C; 80%RH max.
Storage conditions 0~50°C; 85%RH max.
Dimensions 170 x 65 x 30mm
Weight 120g without battery