Puyu Mq-135 Module Air Quality Sensor Detects Harmful Gases

hi there is a huge variety of analog and cue gas sensors on the market today we'll talk about MQ 135 it is used in air quality control equipments for buildings and offices it is suitable for detecting ammonia nitric oxide alcohol benzene smoke carbon dioxide and many more dangerous gases in this video you'll learn details about MQ 135 how to worry to arduino or compatible boards such as esp8266 you'll learn how it works and you see three demonstrations for detecting flammable gases smoke and alcohol this is mq 135 gas sensor module as you can see mq 135 is mounted on top of a breakout board this makes it easy to use on the back on the breakout board you can see that there are four pins which are four analog output digital output ground and VCC you need to connect VCC to five volts you should use either analog or digital output I highly recommend you for more accurate data to use the ana