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Mini CO2 Meter with Infrared (NDIR) Sensor Gas Analyzers Carbon Dioxide CO2 Detector with Alarm Home School Hotel Indoor Use, Find Details and Price about CO2 Detector Monitor Gas Analyzer from Mini CO2 Meter with Infrared (NDIR) Sensor Gas Analyzers Carbon Dioxide CO2 Detector with Alarm Home School Hotel Indoor Use - Shenzhen Sheng Bo Da Pack Manufacture Co., Ltd.