nymea/libnymea/interfaces/co2sensor.json

{
    "extends": "sensor",
    "description": "CO2 (carbon dioxide) sensors. Measures co2 in parts per million.",
    "states": [
        {
            "name": "co2",
            "type": "double",
            "unit": "PartsPerMillion",
            "logged": true
        }
    ]
}