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The SDS011 using principle of laser scattering,can get the particle concentration between 0.3 to 10μm in the air. It with digital output and built-in fan is stable and reliable.Characteristics 1. Accurate and Reliable: laser detection, stable, good consistency;2. Quick response: response time i..

The MQ135 Air Quality Sensor Module a low cost semiconductor sensor which can detect the presence of Ammonia (NH3), Mono-nitrogen oxides (NOx), Alcohol, Benzene, Smoke, Carbon-dioxide (CO 2) etc. It has good sensitivity to harmful gases in a wide range. The sensitive material used for this sensor is..