• Electrochemical fuel cells
• H₂S, Cl₂, SO₂, HCN, CO, NO, NO₂, NH₃ and O₂ etc. 
• 4-20 mA DC output 
• Explosion-proof, weather-proof, and general purpose enclosures
• Non-Intrusive calibration, optional relay and RS-485 communication with Q8 Series
• CSA