Gas Detector Sensor Gas Detected Nitrogen Dioxide Measurement Range 0 to 150 ppm Compatible Detector Model/Series Tango TX2 Compatible Detector Grainger Part Number 782KK4 Sensor Type Electrochemical For Detector Type Portable T90 Response Time 30 sec Sensor Life 2 yr Series Tango TX2 Features Immediate Configuration and Detection Upon Switching A Sensor Interchangeable Sensors Resolution 0.1 ppm T50 Response Time 10 sec Operating Temperature - Maximum 122 Degrees F