MO270-EU-EN v2.3 5/14
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Table of Contents
Introduction .............................................................................................................................................. 2
Features ................................................................................................................................................... 3
Description ............................................................................................................................................... 3
Initial Setup and Battery Charging ........................................................................................................... 6
Operation ................................................................................................................................................. 7
Measurement Screen Menus ................................................................................................................. 10
Alarm Operation ..................................................................................................................................... 12
Trend Analysis Display Feature ............................................................................................................. 12
Memory Logging Mode .......................................................................................................................... 13
Calibration Verification ........................................................................................................................... 14
Battery Replacement ............................................................................................................................. 15
Maintenance .......................................................................................................................................... 15
Specifications ......................................................................................................................................... 16
Appendix – Wood Groups ...................................................................................................................... 17
Introduction
Thank you for selecting the Extech MO270 Moisture Analyzer with full graphical display. The
MO270 detects moisture in wood, particle board, carpeting, and ceiling/bathroom tiles non-
invasively (pinless); the MO270 also measures moisture in sheet rock and other building materials
using pins that are driven into the material under test. The Sensor unit (transmitter) detaches from
the Analyzer unit (receiver) for remote measurement operation. This analyzer is shipped fully
tested and calibrated and, with proper use, will provide years of reliable service. Extech
Instruments is an ISO-9001 certified company.
IMPORTANT NOTES – PLEASE READ BEFORE CONTINUING
TheMO270isafieldupgradeabledeviceintermsofitsfirmware.Pleasevisitthe
ExtechInstrumentswebsite(www.extech.com)forthelatestversionsofthe
firmwareandtheInstructionManual.
Toconservebatteryenergy,theMO270isshippedwiththetwo‘hidden’ON/OFF
switchessettoOFF.Pleaserefertothe‘AnalyzerComponents’diagram(items5and
6)intheDescriptionsectionofthismanualtolocatetheseswitches.Pleaseswitch
theseONinordertopermitpropermeteroperation.
