Product introduction Carbon dioxide is a key indicator of indoor air quality,damaging human cognitive ability and happiness. is the next generation of micro carbon dioxide sensor of Sensirion. has high precision and high cost performance. The module leads out the power supply and communication pins with a 2.54mm spacing pin interface. On chip temperature and humidity compensation realizes humidity and temperature measurement through built-in temperature and humidity sensor. can realize intelligent regulation of indoor ventilation system according to carbon dioxide concentration. Indoor air quality helps to maintain a healthy and efficient environment under low carbon dioxide concentration compatible with a period of time. features Reference accuracy,specified range 400-2000 ppm Supply voltage range: 2.4 – 5. V High accuracy: ± (40 ppm + 5%) Digital interface Integrated temperature and humidity sensor Low power operation to 0.4 Ma average @ 5 V,1 meas/ 5 minutes Interface definition: 1. : negative input port of power supply 2. : positive input port of power supply 3. : clock port 4. : data port Board size: 13.4 × 21.6mm can measure concentrations in the range from 400 to 5000 ppm. In addition to measuring ,the can also measure temperature and humidity. The sensor communicates through an address and can be powered from 2.4V up to 5.5V. You can connect it to both or and duino Uno or Raspberry Pi. You can connect the module via a pin comb or our uŠup connector ( ). The module itself also has its own pul