Features MEASURING RANGE --- Carbon dioxide concentration sensor module, the measuring range from 400ppm to 2000ppm, which has a wide range of applications. SPECIFICATIONS --- With complete calibration and linearization, this module has I2C digital interface, simple and fast installation, suitable for DIY user. OTHER FUNCTIONS --- The carbon dioxide sensor module also has temperature and humidity measurement function, making it a very practical tool. APPLICABLE SCENE --- The CO2 concentration sensor module can be used in home, botanical garden, bookstore, office, bus, etc., compact and practical. COMPACT SIZE --- The CO2 detection module has a compact size and light weight, equipped with pin header, making it easy to install and replace. Specification: Item Type: CO2 Sensor Module Measurement Range: 400ppm-2000ppm Accuracy: ±40ppm + 5% of Reading Current Consumption: 17mA (measurement rate 5s), 0.5mA (measurement rate 5min) Product Size: Approx. 25.5 x 22.8 x 7.7mm / 1 x 0.9 x 0.3in Package List:1 x CO2 Sensor Module 1 x Pin Header Package List 1 x CO2 Sensor Module 1 x Pin Header