1、HIGH FLEXIBILITY AND RESOLUTION: Infrared CO2 sensor module come with high flexibility, high resolution, low power consumption 2、UART, PWM WAVEFORM OUTPUT: CO2 sensor module provide UART, PWM waveform and other output methods, realize accurate detection 3、TEMPERATURE COMPENSATED FUNCTION: CO2 detection sensor module provide temperature compensated, excellent linear output, great performance 4、STABLE AND DURABLE: Carbon dioxide gas sensor module have excellent stability and long service life, you can use with confidence 5、WATER VAPOR INTERFERENCE RESISTANT: This module is resistant to water vapor interference, no poisoning, measurement range is optional within 0‑0.5%Vo1 6、NDIR PRINCIPLE TO DETECT: Universal small sensor using the principle of non dispersive infrared (NDIR) to detect CO2 in the air, with good selectivity, no oxygen dependence, long life 7、BUILT IN TEMPERATURE COMPENSATION: With digital output and waveform output at the same time, easy to use. A high performance sensor made by closely combining mature infrared absorption gas detection technology with accurate optical path design and sophisticated circuit design