This is a pinless moisture meter for wood and other building materials.
This user's guide explains how to operate the Ex Tech MO257 pinless moisture meter, including calibration procedures and battery replacement. The device uses high-frequency sensing to measure moisture in wood and other materials without damaging surfaces. It features programmable alarms for risk and wet conditions, a backlit LCD display, and automatic power-off after 30 minutes of inactivity.
The guide also details specifications such as measurement depth (0.79–1.57 inches), operating temperature (40–110°F), and battery requirements (three AAA batteries). Calibration is required before first use and whenever moving between measurement areas. The meter displays moisture levels from 0.0 to 100.0 and includes hold, min, max, and alert functions.
| Moisture Range | 0.0 to 100.0 Relative only |
|---|---|
| Measurement Depth | 0.79 to 1.57” (20 to 40mm) |
| Display type | Backlit LCD |
| Operating Temperature | 40 to 110°F (4 to 43°C) |
| Power Supply | Three (3) 1.5V ‘AAA’ batteries |
| Dimensions | 9.2 x 2.5 x 1.1” (235 x 63 x 28mm) |
| Weight | 7.7oz (218g) |
Press the MEAS button immediately after powering on. Keep the sensor at least 3–4 inches from any object. Calibration is complete when beeping and flashing stop. If the calibration reading exceeds 0.5, re-calibrate with hands clear of the sensor.
The moisture range is 0.0 to 100.0 Relative only.
The meter can sense moisture to a depth of 0.79 to 1.57” (20 to 40mm).
The meter uses three (3) 1.5V ‘AAA’ batteries.