DirectSense® XM Probe-Datalogger

- Onboard datalogging: Stores months of readings without the need for an attached device (and a lower price point).
- Modular Sensor Array: 2–8 interchangeable, plug-and-play smart sensors per probe.
- Broad Parameter Selection: Choose from 25+ sensor options, including:
- TVOCs (PID), multiple ranges
- Carbon Dioxide (NDIR), low and high ranges
- Formaldehyde, very low range
- CO, O3, NO₂, NH₃, SO₂, Cl₂, H₂S, ClO2, NO, O2, H2, and more (EC)
- %RH, Temperature (°C/°F)
- Smart Sensor Repeatability: Integrated micro-board stores calibration data with a patented design for sensors to move probe to probe without any calibration adjustment for the new probe.
- Built‑In Fans: Eliminates sensor heating artifacts and accelerates response times.
- Rugged Enclosure: Rubberized grips, brass tripod/belt-clip mount, and secure hatch for easy sensor swaps.
- Multiple Interfaces: Bluetooth LE, Wi‑Fi, and/or cable.
- Platform Integration:
- Works with GrayWolf’s AdvancedSense® XM rugged, purpose-built meters for maximizing multi-probe applications and inclusion of additional parameters (Particulate, Differential Pressure, Air Velocity), local display, extended logging, and extensive extra features.
- Connects to Windows PCs/tablets with WolfSense LAP, Android and iOS smartphones/tablets with free WolfSense Mobile app
- Internet connection to the GrayWolfLive™ cloud app for remote real‑time display/logging and advanced features

Click here to download PDF
View the full DirectSense XM Press Release here
Upgrade Your DirectSense II Probe
Give your DSII probe DSXM functionality with a Remote Upgrade*, available for most DSII’s manufactured after October 2022. *Some probes manufactured 2022-2023 may need to be returned to GrayWolf for a firmware update.
If you purchased a DSII in 2025 the upgrade is at no charge! Contact SalesTeam@GrayWolfSensing.com by June 30, 2025 to organize your free upgrade.
If you purchased a DSII between Q4 2022-2024, the remote upgrade is available at a low cost. Contact your local distributor or GrayWolf direct for details. Along with a password and link to the remote upgrade software with instructions, you’ll receive a mailed label for the probe indicating this upgrade.

Already have an order in process for DirectSense IIs?

Older DirectSense II & DirectSense I trade-ins
If your DirectSense II predates WolfRadios, or you have the earlier DirectSense I, GrayWolf offers significant trade-in discounts towards the purchase of a new DirectSense XM. Contact your local distributor or GrayWolf directly for more information.
Service/Calibration Contracts are Transferable
If you have an existing AdvancedSense Pro or DirectSense II service contract, but want to upgrade to AdvancedSense XM and/or DirectSense XM, the contract is transferable (and extendable).
p.s. Don’t have a current Service/Calibration Contract? You can contact Service@GrayWolfSensing.com to request pricing. Always prudent to keep your valuable GrayWolf instrumentation well-tuned!
DSXM Mfg in Ireland, get them now in the US ahead of potential tariff driven price increases
GrayWolf’s DirectSense XMs (as well as AdvancedSense XMs) are manufactured at our Ireland facility and are already subject to increased tariffs in the USA. NOW is an exceptionally good time to order them, if you are in the US, ahead of potential tariff driven price increases.
PC-3016/3500 Particle Meters

Come see us at these upcoming Tradeshows

AIHA Connect 2025
Kansas City Convention Center, Kansas City, MO, USA
Booth # 305
May 19-21, 2025

Healthy Buildings 2025
ISIAQ International, Regional Conference, Europe
Reykjavík, Iceland
June 8-11, 2025

Italian National Congress of Industrial and Environmental Hygiene
Taranto, Italy
TCR Tecora Booth
June 25-27, 2025
Sincerely,
Cassandra Rivera
Marketing Manager
GrayWolf Sensing Solutions
Advanced Environmental Instrumentation
US headquarters
6 Research Drive • Shelton, CT 06484
GrayWolfSensing.com
+1.203.402.0477 office • 800.218.7997 toll-free
Questions? Call 1-203-402-0477,
e-mail SalesTeam@GrayWolfSensing.com,
or fill out a request form for price quotes, rentals or local distributor information at
https://graywolfsensing.com/contact-us/
Ireland facility
Annacotty Industrial Estate, unit 1C
County Limerick, Ireland