Manufacturer : Industrial Scientific Corporation (ISC) Model No: TANGO TX1-2 SINGLE GAS DETECTOR& Specification :& Sensor Measuring Range: Hydrogen Sulfide (H2S), 0 -500 ppm Event Log: 60 Alarm events Temperature range: -40 Degree Celsius to 50 Degree Celsius Weight: 126g Dimension: 99 X 51 X 35mm Certification: IP66/67, ATEX EX ia l Ma; Ex ia IIC T4 Ga Case Material :&Case top: Polycarbonate with a protective rebber overmold & & & & & & & & & & & & & & &Case bottom; Conductive polycarbonate