1-203-402-0477 [email protected]


GrayWolf provides state-of-the-art sensor, instrument and software solutions for environmental data logging, survey documentation and report generation. Click here to visit the Customer Self-Serve portal if you are looking to upgrade your existing GrayWolf Software.

WolfSense® Mobile

Download the WolfSense Mobile app on an Android or iOS device to view and log readings from GrayWolf’s multi-parameter DirectSense II probes (and/or GrayWolf particulate meters with the WolfRadio-XM module).
These apps allow you to use your smartphone, tablet or other Android/iOS device as a real-time display, data-logger and more. Store “snapshot” logs during walk-thrus or trend logs over time of multiple parameters and/or view trend graphs on your screen. Take advantage of your feature-rich smartphone to add photos, videos, text and audio notes directly to data files for efficient, reliable documentation.

Download the free app from the Google Play or Apple stores now, and you can “demo” the software, viewing simulated readings. Click on Menu/Readings and select either “View IAQ demo mode” or “View TOX demo mode”.

Minimum Requirements:
Apple iOS 11
Android 9

IAQ TOXIC GAS iPhone Android Collage


GrayWolf’s cloud software enables remote access to most of GrayWolf’s products via your own WiFi enabled device (smartphones, tablets, laptops, desktops, etc.). View real-time data in “Live Display” mode or as gauges (optionally with acceptable ranges highlighted). View logged data in tabular format, as multi-Y graphs and/or in other views. Cloud data is stored on reliable, secure Microsoft Azure servers. Alerts can optionally be e-mailed, or texted when a parameter exceeds or drops below a set-point.

Click here for more detail.


GrayWolf’s proprietary application software for displaying measurements, data logging, generating on-screen trend graphs, accessing on-board educational information (sensor tips, user tips, etc.), and the note storing interface (audio, text, etc. for documenting surveys),  and much more. All regularly updated at no charge to customers. WolfOS operates on GrayWolf’s AdvancedSense XM and Zephyr XM instruments.

Contact us for an on-line demo.


WolfSense Lap

Application software for displaying measurements, data logging, accessing on-board educational information (sensor tips, help videos, user tips, etc.), voice queues and the note storing interface (audio, photo, text, etc. for documenting surveys). And much more, all regularly updated. WolfSense LAP operates on GrayWolf supplied Windows 10 Tablets, or on your own Windows 8/10/11 PC. Check out our on-line demo for examples.

Tablet WS2023

WolfSense PC

Data Download and Graph/Report Generation Software, supplied as standard and regularly updated. For use on Windows 8/10/11 OS PCs.

WolfSense ARG

Optional Advanced Report Generator Software report template/structure builder for automated, detailed reports.

Click here for more detail (and for an example report).


FumeHood Face Velocity Testing Module

Guides the user from airspeed sensor positioning through to a pass/fail report based on user selected criteria (requires AS-201 or AS-202A hotwire air velocity probe).

Click here for more detail.


Duct Flow Calculation Module

Calculates and displays air velocity measurement points, walking the user through a choice of Log-Tchebycheff or Equal Area duct traverses (requires AS-201 or AS-202A hotwire air velocity probe).

Click here for more detail.


Outdoor Air Ventilation Rate Module

Calculate outdoor air (dilution) ventilation rates per person, per area or as an air exchange rate. Choice of CO2 Air Ratio, Tracer Decay and Equilibrium Tracer techniques (requires DirectSense probe with NDIR CO2 sensor installed).

Click here for more detail.

For Detailed Information: