Industrial scientific Ventis® Mx4 portable 4-gas monitor. When you need a small, portable 4-gas monitor, rely on the Ventis® MX4. The rugged multi-gas monitor used with a DSXi Docking Station makes maintenance and reporting simple. Save time and reduce human error with maintenance and usage data available in Industrial Scientific's iNet® Control software. Monitor up to four gases. Configure application with a choice of sensors and pump options. Transition seamlessly from personal monitoring to confined space entry using the Ventis® Slide-on Pump eliminating the need for extra equipment. Simplify fleet management with your choice of black or orange overmold.