Usage Tips:1、CO2 Gas Sensor: The gas detection module can test the CO2 to ensure timely understanding of the gas content in the work environment. 2、Great Accuracy: Comes with 0-10000ppm measurement range, the CO2 gas sensor also enables stable data transmission with high accuracy. 3、Quick Response: Fast in response, this sensitive CO2 detection sensor with TTL signal output can give you reliable testing results. 4、Stable Outputs: Designed to have DO TTL output and AO signal output, the air quality sensor module will largely simplify the analysis. 5、Easy to Install: Light in weight and compact in size as well, the gas detection sensor is very convenient to install within minutes. 1 x CO2 Sensor Module Item Type: CO2 Sensor ModuleInput Voltage: DC 5V, 24V maximum. Power Consumption and Current: 150mADO Output: TTL digital quantities 0 and 1, 0.1V and 5V. AO Output: Analog Level SignalDetection Range: 0-10000ppmWorking Temperature: -10~50℃, 20℃ nominal temperature. Humidity: 95%RH, 65%RH nominal humidity.