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Ammonia 0.1000% to 4.0% in air or ammonia 0.0001% to 0.0999% in nitrogen
Provides a field selectable current or voltage output that is proportional to the carbon monoxide concentration in underground parking garages, vehicle maintenance facilities, or mechanical rooms
0.0002% to 0.01% nitrogen dioxide in nitrogen or 0.0002% to 0.0100% nitrogen dioxide in air
Sulfur dioxide 0.0001% to 0.0999% in nitrogen or air