6064855664689152Elecfreaks Octopus MG811 CO2 Gas Sensor Octopus MG811 CO2 Gas Sensor is a CO2 electronic brick in our OCTOPUS series, the basic design for the outlook, PCB fixing holes and connections are the same wi Product #: businesspro-Elecfreaks Octopus MG811 CO2 Gas Sensorhttps://www.businesspro.store/i/Vi_Q_ggAA2024-12-07 Regular price: $HKD$500.0 Available from: Businesspro MallIn stock