Abstract: The disclosure relates to a sensor for measuring a gas concentration of a target gas in a sample of ambient air. The sensor comprises a first gas sensitive component comprising a first gas sensitive layer being arranged between a first pair of measuring electrodes, a second gas sensitive component comprising a second gas sensitive layer being arranged between a second pair of measuring electrodes and one or more heating elements to heat the first gas sensitive layer and the second gas sensitive layer. The first gas sensitive layer and the second gas sensitive layer comprise a metal oxide semiconductor. The first gas sensitive component is configured to measure the gas concentration of the target gas in a first concentration band and the second gas sensitive component is configured to measure the gas concentration of the target gas in a second concentration band.