Customize the Ventis MX4 to fit your needs with up to four sensors, multiple runtime options, alarm thresholds, and more. Whether you’re performing daily confined space entries, wearing the instrument for personal gas detection, or anywhere in between, there’s a Ventis MX4 configuration that’s right for you.

The Ventis® MX4 is a four-gas monitor with the portability and size of a single-gas monitor. Eliminate the need for extra monitors and transition seamlessly from personal monitoring to confined space entry with the Ventis® Slide-on Pump—ideal for operators who wear their gas monitors primarily for personal protection but occasionally require a pump for confined space entries.

  • Detect up to four gases with a wide range of sensor options
  • Select alarm set points, set latch alarms, disable instrument shutdown while in alarm, and more
  • Save time and reduce human error with maintenance and usage data available from iNet Control software
  • Available with or without an integral pump, or with the Ventis Slide-on Pump for ultimate flexibility
  • Non-pumped instruments compatible with 12-hour, 18-hour, or 20-hour batteries


Keep your Ventis MX4 monitors up and running with a DSXi Docking Station, which automatically bump tests, calibrates, charges, and uploads gas detector data each time you dock a monitor. The docking station also keeps your monitor up to date with free, automated software and firmware updates.

To make maintenance and repairs even easier, pair your Ventis MX4 monitors and DSXi Docking Station with iNet Exchange. iNet Exchange eliminates maintenance and repair by reviewing the performance of the monitor, sensors, circuit board, microprocessors, and pump every time you dock a monitor.

Well tell you whether a monitor needs attention before it fails and well automatically replace it. Before you know it, an iNet Exchange box is on your doorstep with a new unit, so you can spend more time managing your safety program and less time repairing gas detectors.


Combustible gases/methane – Catalytic Bead
O2, CO, CO/H2 low, H2S, NO2, SO2 – Electrochemical


Combustible Gases: 0-100% LEL in 1% increments
Methane (CH4): 0-5% of vol in 0.01% increments
Oxygen (O2): 0-30% of vol in 0.1% increments
Carbon Monoxide (CO/H2 low): 0-1,000 ppm in 1 ppm increments
Carbon Monoxide (CO): 0-1,000 ppm in 1 ppm increments
Hydrogen Sulfide (H2S): 0-500 ppm in 0.1 ppm increments
Nitrogen Dioxide (NO2): 0-150 ppm in 0.1 ppm increments
Sulfur Dioxide (SO2): 0-150 ppm in 0.1 ppm increments

Like the Ventis MX4? You’ll Love the Ventis Pro5

Take your gas detection program to the next level by adding connectivity. Improve site safety with the Ventis Pro5: a flexible, multi-gas monitor with wireless connectivity and real-time alerts that show who needs help, why they need help, and where they are located.

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