# Extech MO55W Wireless Datalogging Pin/Pinless Moisture Meter # Extech MO55W Wireless Datalogging Pin/Pinless Moisture Meter ## Key Features At A Glance - Pinless (non-invasive) and Direct Pin measurement methods in one meter for wood and building materials - Bluetooth Datalogging Module (DAT12) transmits readings to iOS and Android devices via the free ExView W-Series App - Pinless capacitance sensing measures to a maximum depth of 1" (25 mm); Direct Pin method uses ~0.4" (10 mm) pins - Records over 15,000 readings (15,360 data points) for wireless transfer and Excel-format export - Displays moisture in wall board, sheet rock, cardboard, plaster, concrete, and mortar - Low, medium, and high moisture icons plus an audible alert whose beep rate increases as moisture rises - Built-in Pin-Mode accuracy test, Data Hold, and Auto Power Off - Programmable High/Low audible alarms with color-coded log reporting in the app - Complete with two pins, protective cap, DAT12 module, 9V battery, and soft case The Extech MO55W is a wireless datalogging pin/pinless moisture meter that lets you measure the moisture content in wood and other building materials using your choice of the Pinless (non-invasive) method or the Direct Pin method. With its wireless feature, the Bluetooth Datalogging Module, and the free ExView W-Series App, it transmits readings in real time to a smart device, stores over 15,000 readings for wireless transfer to generate a report or data analysis, and lets you add notes and readings to photos taken with the smart device camera. The meter is simple to operate, uses icons to indicate moisture content, and alerts you when moisture levels exceed programmed limits. The Pinless method allows non-invasive scanning of a surface, while the Direct Pin method takes a localized reading through two contact pins. A moisture meter quantifies how much moisture is held within a material so a technician can judge whether it is within an acceptable range before finishing, sealing, or further work. The MO55W is ideal for building restoration and other applications where it is critical to detect moisture in flooring, tiles, and beneath carpeting. It reads moisture in materials such as wall board, sheet rock, cardboard, plaster, concrete, and mortar, in addition to wood. ValueTronics stocks and holds its own inventory in a 20,000 sq ft secure warehouse at 1675 Cambridge Drive in Elgin, Illinois. That combination lets buyers source the MO55W with confidence in both condition and availability. ## Brand Heritage Extech Instruments operates as a brand under FLIR Systems, which acquired Extech in 2007; the datasheet carries the FLIR Systems copyright. ## Accessories Supplied - Two pins (installed on meter) - Protective cap - Wireless Datalogging Module (DAT12) - 9V battery - Soft case ## Product Core & Specifications Specification Value Sensor Type Pin: Contact Pins (Electrical Resistance Method); Pinless: Pinless sensor (Capacitance Sensing Method) Wood Moisture Range Pin: 5 to 50.0%; Pinless: 0.1 to 99.9% Other Building Materials Pin: 1.5 to 33.0%; Pinless: 0.1 to 99.9% Resolution Pin: 0.1%; Pinless: 0.1% Basic Accuracy Pin: ± (3% reading + 5 digits); Pinless: — Measurement Depth Pin: ~0.3" (8mm) depth using 0.4" (10mm) pins; Pinless: 1" (25mm) depth Wood Moisture Icon Levels Pin — Low: 5 to 11.9%; Medium: 12 to 15.9%; High: 16 to 50%. Pinless — Low: 0 to 16.9%; Medium: 17 to 29.9%; High: 30 to 99.9% Building Material Icon Levels Pin — Low: 1.5 to 16.9%; Medium: 17 to 19.9%; High: 20 to 33%. Pinless — Low: 0 to 16.9%; Medium: 17 to 29.9%; High: 30 to 99.9% iOS/Android Compatibility iOS 8.0 and higher / Android 4.3 and higher Datalogging (with DAT12) 15,360 data points Dimensions/Weight 6.7 x 2.6 x 1.2" (170 x 65 x 30mm) / 4.2oz (120g) battery not included > **Important:** iOS/Android smart device not included. > **Important:** The weight specification (4.2 oz / 120 g) is stated battery not included. > Recommended pairing: MO50-PINS replacement pins (10 pins) and the DAT12 replacement Bluetooth Wireless Datalogging Module are available per the ordering guide. ## About this New unit This is a brand-new, factory-sealed unit, supplied exactly as it arrives from the manufacturer and backed by the full manufacturer warranty. For the exact configuration, available options, included accessories, or current lead time for your application, our Test Architects can confirm the details before you order. ValueTronics supplies both new and used test and measurement equipment. New units ship factory-sealed, exactly as received from the manufacturer; every used unit is inspected and functionally verified in-house at our 20,000 sq ft secure facility in Elgin, Illinois before it ships. Our Test Architects can help you select the condition, calibration, and configuration that fit your application. **Please review the Manufacturer's Data Sheet to verify published specifications. Feedback on this webpage is always welcome — please reach out to your Test Architect at any time for questions or concerns. Thank you, we truly appreciate you being our customer.** ## Details - **Price:** 152.89 USD - **Vendor:** Extech - **Type:** Data Log - **Tags:** Extech, Manufacturers, Meters & DAQ, Other, product_manual_group_2, Product_new ## Variants | Variant | Price | Available | |---------|-------|-----------| | Default Title | 152.89 USD | In stock | ## Images - MO55W Extech Meter --- > Source: [ValueTronics](https://valuetronics.com/products/mo55w-extech-meter-new) > Updated: 2026-06-20