Sensor 4

Ammonia (NH3)
CO-H
Carbon Dioxide (CO2) (IR)
Carbon Monoxide (CO)
Carbon Monoxide (CO) (0-500 ppm)
Hydrogen Cyanide (HCN)
Hydrogen Sulfide (H2S)
LEL
Methane (CH4) (IR)
Nitrogen Dioxide (NO2)
O2
PID
Sulfur Dioxide (SO2)