Gas Detector Sensor Gas Detected Nitrogen Dioxide Measurement Range 0 to 150 ppm Compatible Detector Model/Series Ventis MX4 Compatible Detector Grainger Part Number 6UAX1 Sensor Type Electrochemical For Detector Type Portable Sensor Life 2 yr Series Ventis MX4 Features Immediate Configuration and Detection Upon Switching A Sensor Interchangeable Sensors Resolution 0.1 ppm Operating Temperature - Maximum 122 Degrees F Operating Temperature - Minimum -4 Degrees F