CO2 Sensor (4 in 1) EM500-CO2 is designed for measuring gaseous carbon dioxide (CO2) concentration in harsh environments. It is useful in the application where knowing CO2 level is important like greenhouse, building ventilation, fruit and vegetable storage. Besides, it also supports temperature, humidity and barometric pressure measurement. https://elecena.pl/product/18413008/em500-co2-868m-co2-sensor-lorawan 2021-05-09 https://elecena.pl/product/18413008/em500-co2-868m-co2-sensor-lorawan 2022-06-29