These sensors use electrolytes and electrodes to measure ozone presence. When ozone comes into contact with the electrolytes in the device, it interacts with electrolytes. This causes electrons to start passing between the two electrodes, triggering the device. This type of sensor works quickly. An ozone monitor is electronic equipment that monitors for ozone concentrations in the air. The instrument may be used to monitor ozone values for industrial applications or to determine the amount of ambient ozone at ground level and determine whether these values violate National Ambient Air Quality Standards.