221-7806, Werma, Werma KombiSIGN 72 CO2 Detector for CO2, +35°C Max, Mains-Powered, Brand Werma, Maximum Temperature +35°C, Power Source Mains, Equipment Type Air Quality Monitor Werma KombiSIGN 72 CO2 Detector for CO2, +35°C Max, Mains-Powered