GrayWolf’s new DirectSense II probe range exploits 20 years of experience as the market leading manufacturer of portable Indoor Air Quality (IAQ) instrumentation and takes current sensor technology to a whole new level.

Now with the ability to connect wirelessly via Bluetooth to your iPhone/ android mobile phone, or connect straight from Wi-Fi enabled probes to the GrayWolfLive cloud platform for real-time access, data logging and alerts. Measurements are logged in one minute intervals and can be displayed as graphs, gauges, tables and live readings.

  • The all-new range of DirectSense II smart probes are cutting-edge air monitoring probes to accommodate from two (2) up to eight (8) plug-and-play smart sensors into a single hand-held, desktop or wall-mounted housing.
  • Choose from 25 different indoor air quality, green building, industrial hygiene and HVAC parameters including; TVOCs (PID), Carbon Dioxide (NDIR), Carbon Monoxide, Ozone, Nitrogen Dioxide, Ammonia, Sulfur Dioxide, Chlorine, Hydrogen Sulfide, %RH, °C/°F and many others.
  • The DirectSense II probes connect to GrayWolf’s AdvancedSense® meters which enable additional parameters such as Particulates, Differential Pressure, Air Velocity and Formaldehyde. In addition to the broad offering of parameters, there are also different sensor ranges to choose from for some of those parameters to best fit specific applications.
  • The probes are housed in a rugged enclosure with rubberized grips for hand-held use and for added drop protection. Brass threading on the back accommodates belt clips (convenient for walk-thru surveys), and tripod mounting when long-term trend logging.


  • Bluetooth connection direct to iOS and Android smartphones and tablets

  • GrayWolfLive® available via WiFi enabled DirectSense II probes with secure cloud platform for remote real-time access, data-logging, and alerts
  • Plug-and-play sensors to fit your application(s), current and future.
  • Smart PID sensors for low (IAQ range) or high (toxic exposure range)
  • Total Volatile Organic Compounds (TVOCs)
  • Smart NDIR sensors for low (IAQ range) or high (toxic exposure range)
  • Carbon Dioxide (CO2)
  • Smart electrochemical sensors for CO, O3, NO2, NH3, H2S, SO2, O2, Cl2, HCl, HCN, H2 and much more
  • Smart T/%RH sensors which can also display/log pressure-corrected dewpoint, absolute humidity, specific humidity, etc.
  • Handheld, tripod-mounted, case-mounted, desk-mounted, wall-mounted.
  • Interface with rugged purpose-built meters, with tablet computers and/or with your own Windows Laptops or Desktops.

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