Gas Detector Sensor Gas Detected Sulfur Dioxide Measurement Range 0 to 150 ppm Compatible Detector Model/Series Ventis MX4 Compatible Detector Grainger Part Number 6UAX2 Sensor Type Electrochemical For Detector Type Portable Compatible Detector Manufacturer Part Number VTS-K5232100101 VTS-K5232101101 VTS-K5232110101 VTS-K5232111101 Sensor Life 2 yr Series Ventis MX4 Features Immediate Configuration and Detection Upon Switching A Sensor Interchangeable Sensors Resolution 0.1 ppm