MQ-135 Gas Sensor
The MQ-135 Gas sensors are used in air quality control equipments and are suitable for detecting or measuring of NH3, NOx, Alcohol, Benzene, Smoke and CO2.

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MQ-135 Gas Sensor
The MQ-135 Gas sensors are used in air quality control equipments and are suitable for detecting or measuring of NH3, NOx, Alcohol, Benzene, Smoke and CO2.

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๐ธ Photo of the day: MQ135 gas sensor module for air quality detection. #Enewground #mq135 #gassensor #airquality #arduino #arduinouno #arduinomega #arduinonano #raspberrypi #raspberrypi4 #maker https://www.instagram.com/p/B0anxMmnm3o/?igshid=3csjfpldqwen
MQ135 Gas Sensor with ESP8266 and ST7789 SPI Display
MQ135 is a Gas sensor. It works on analogue and digital pins with Arduino boards. It gives analogue value in PPM of Air Quality. When we use a digital pin, it gives on signal at a particular value of analogue. This can be adjusted via potentiometer. So, you can also detect a particular gas without using any microcontroller. Just seeing a green LED, you can know it. Read the full article
Opening package from Aliexpress (Sensor of gas, MQ-135) http://ali.pub/uckm2ย - link on Aliexpress