Data Sheet
PRODUCT DATASHEETPRODUCT DATASHEET
MO55W Wireless Datalogging 
Pin/Pinless Moisture Meter
Quickly measure the moisture content in wood and other 
building materials with your choice of Pinless (non-invasive) 
or Direct Pin method measurement. Using the wireless 
feature, Bluetooth
®
 Datalogging Module, and the free 
ExView
®
 W-Series App, you can transmit readings in real-
time to your smart devices, store over 15K readings for 
wireless transfer to generate a report/data analysis, add 
notes and readings to photos taken from your smart device 
camera, and use your smart device as a 2nd display for easy 
viewing or sharing. The MO55W is simple to operate and 
uses icons that indicate moisture content and alerts you 
when moisture levels exceed programmed limits. 
MO55W Features
•  Wireless function with Bluetooth
®
 Datalogging Module 
transmits readings to iOS
®
 and Android
™
 devices for 
remote viewing using the free app
•  Displays moisture level in wood and building 
materials such as wall board, sheet rock, 
cardboard, plaster, concrete, and mortar
•  Non-invasive Pinless moisture measurement 
to a max. depth of 1" (25 mm)
•  Direct Pin moisture measurement uses 
~0.4" (10 mm) pins
•  Audible Alert (beep rate increases as moisture 
level increases) 
•  Icons display low, medium and high moisture range
•  Built-in Pin-Mode accuracy test
•  Data Hold and Auto Power Off
•  Ideal for building restoration, and other applications 
where it is critical to detect moisture in flooring, tiles, 
and beneath carpeting
•  Complete with two pins (installed on meter), protective 
cap, Wireless Datalogging Module (DAT12), 9V battery, 
and soft case
  See next page for product specifications and ordering information
Wireless Datalogging Features
•  Bluetooth
® 
Datalogging Module (DAT12) can record 
over 15k readings and transmit them to a smart device
•  Free ExView
®
 W-Series App, provides Wireless Data 
Streaming with real-time remote viewing of readings
•  Adjustable sample rate and file size support most 
application needs
•  Programmable High/Low audible alarms
•  Color coded log reporting for easy identification of 
Alarm events 
•  Record data directly to phone or tablet
•  Export data in Excel
®
 format
•  Share data files and snapshots directly from application
•  Take snapshots of the measurement area with your 
connected smart phone or tablet camera to capture 
measurement-related images and to document date/
time stamps and measurement data 
www.extech.com
Specifications subject to change without notice. Copyright © 2019 FLIR Systems, Inc. All rights reserved including the right of reproduction in whole or in part in any form. 
Rev. 3/27/19
UPC Code: 793950475515
Wireless Connectivity 
and Datalogging
Pinless Method
Direct Pin Method


