Do you want to measure the air quality in your bedroom or bathroom as well? That's a great idea. Every room is different and requires special attention. The Netatmo smart weather station can monitor up to three additional rooms with extra smart indoor modules. Temperature, humidity, and air quality (CO2): Access real-time data for each room via your smartphone. The indoor additional module is sold separately and works only with a Netatmo smart weather station, which is available for purchase separately.