The carbon dioxide sensor comes with an integrated internal antenna or optional external SMA/IPEX antenna, offering up to 5 km of reach in non-line-of-sight (NLoS) conditions and up to 18 km in line-of-sight (LoS) environments. The CO2 sensor features specific signal output instructions, high sensitivity, and good selectivity to CO2, ensuring long service life, reliable stability, and fast corresponding recovery. The sensor provides external sensor connectivity and pulse counting (MPI). With low power consumption, it has an operational battery life of 5-10 years using 2 x AA Li-SOCI2 batteries. The IP67 enclosure rating ensures durability and protection against harsh environmental conditions.