A capnography system includes a CO2 sensing system having a CO2 sensor configured to measure a CO2 concentration in exhaled breath of a subject, a processor configured to derive one or more breath related parameters based on the measured CO2 concentration, and a communication unit. The capnography system includes a tubing system configured to allow flow of respiratory gasses therethrough. The tubing system includes a connector configured to connect the tubing system to the CO2 sensing system and a communication component configured to provide an indication of a type of the tubing system to the communication unit. The communication unit is configured to transfer data to the processor based on the indication obtained from the communication component, and the processor is configured to change or suggest a change of an operation mode of the CO2 sensing system based on the data.
