1-203-402-0477 [email protected]


Harnessing State-of-the-Art Technology for Air Measurement Applications

DirectSense Indoor Air Quality Probe

Reliable data-collection and reporting has never been easier

DirectSense® II

Build your probe specific to your needs with GrayWolf’s highly reliable and versatile DirectSense II

Green Buildings

Green Building Indoor Air Quality IAQ Monitors, Meters for LEED, WELL & other Testing

Toxic Multi-Gas Meters

Toxic Multi-Gas Monitors for handheld & long-term Toxic Gas measurement and logging

Portable Meters

Monitoring kits for portable, semi-permanent and/or continuous use. Flexibility for current and future needs.

Long Term Logging

Desktop logging via connection to a meter, tablet or the cloud. Security cases, and tripods are also available for a broad range of monitoring applications.

Continuous Monitoring

Wi-Fi enabled DirectSense II probes can send real-time info, and trend-log data to smart displays, smartphones, tablets: most any smart device.


Exceptionally accurate differential pressure, air velocity (hotwire or pitot tube) and %RH. Measure Ventilation Rates, Volume Airflow and much more.

Particulate Meters

Particle Meters for IAQ, PM1.0, PM2.5, PM10, TPM Measurement and Data-Logging

Cloud Software App

GrayWolfLive® enables remote access to secure, real-time and data-logged readings from GrayWolf probes, meters and monitors

WolfSense® Mobile Apps

Connect Smart IAQ and Toxic Gas Probes Directly to iOS and Android Devices, Including Smartphones

GrayWolf Sensing Solutions

Since 1998, the worldwide market leader in high performing portable, datalogging and long-term fixed monitoring indoor air quality (IAQ) meters and monitors.

Advanced sensor, instrumentation, software and reporting technology for superior environmental test instrumentation in facilities from schools to hospitals to office/government buildings to manufacturing plants, shipboard and beyond. Worldwide distribution and service, with a strong and growing presence in other environmental air measurement markets.

DirectSense II IAQ, TOX Multigas Meter

DirectSense II Multi Sensor Probe


Connect the DirectSense II probe to the meter/monitor/tablet/smartphone of your choice

DSII and Smartphone

Bluetooth connection direct to iOS and Android devices (tablets, smartphones, etc.). Use your own or GrayWolf supplied. Audio/photo/video/IR/text notes, advanced data-logging, on-screen graphing, sensor tips and many other features.

DirectSense II with Ruggedized Cradle

GrayWolf supplied MS Windows Tablets are provided with relevant accessories. Or use WolfSense® LAP software to enable your own WIN 8/10/11 Laptop/PC. Multi-probe connection via cable and/or Bluetooth wireless. Feature rich.

AdvancedSense PRO/BE and DSII

GrayWolf’s all-new, purpose-built AdvancedSense® XM meters are feature rich. Up to 32 simultaneous parameters connecting multi-sensor DirectSense® II probe(s), in addition to other internal and external sensors (and/or particle meters) via cable and/or Bluetooth. Also use this meter’s Wi-Fi to access all parameters via the cloud.

GrayWolfLive Cloud

GrayWolfLive® secure cloud platform for remote real-time access, data-logging, and alerts. Connect straight from Wi-Fi enabled DirectSense II probes or via various GrayWolf meters, tablets, iOS or Android devices. View data as text, graphs, gauges, and/or tables.


To Request Detailed Information:


A small sampling listed by selected industries.

Aerospace Customers

  • Airbus
  • Boeing Commercial Airplane Group
  • Bombardier
  • Cessna Aircraft Co
  • General Electric
  • General Dynamics
  • Hindustan Aeronautics
  • Lockheed Martin
  • North American Space Agency (NASA)
  • Northrup Grumman
  • Pratt & Whitney
  • Raytheon
  • ST Aerospace (Singapore)
  • SpaceX
  • United Technologies Research Center
  • US Federal Aviation Administration (FAA)

Airports & Airlines

  • Air Canada
  • American Airlines
  • Australia Pacific Airports
  • British Airways
  • COPA Airlines
  • Dubai Airport Authority
  • Egypt Air
  • Grantley Adams Int’l Airport (Barbados)
  • Greater Orlando Airports
  • Los Angeles International Airport
  • Lufthansa
  • Metro Nashville Airport Authority
  • Metropolitan Washington DC Airports Authority
  • Qantas
  • Scandinavian Airlines System

Architecture and Construction

  • Architect of the (US) Capitol
  • BAM Techniek
  • Burj Khalifa
  • Burns & McDonnell Engineering
  • Camp Dresser & McKee
  • Consigli Construction
  • Delos Living
  • Healthy Home Solutions
  • Phoenix Constructors
  • Public Works & Government Services Canada Dept. of Architecture & Engineering
  • Skidmore Owings & Merrill
  • US Green Building Council
  • XI’an Univ of Architecture & Tech
  • Baker Group “We began using the IQ-610 probe in the fall of 2008. It has surpassed our standards when using it for measuring IAQ for LEED Indoor Environmental Quality credit 3.2.”Thomas C. Hardinge, LEED AP
If you are a GrayWolf Customer (or potential Customer) and would care to tell us about your GrayWolf experience, Click Here. We greatly appreciate your valuable feedback and are always open to your suggestions to innovate and improve!


Upcoming Events

AIHce Expo 2023

AIHce Expo 2023


MAY 22-24, 2023
BOOTH 1201

The ALL-NEW AdvancedSense XM IAQ/Toxic Gas meter will be introduced here at AIHce, come by and see it!



AIHce Expo

For Detailed Information: