Mq 135 Gas Sensor

Smoke detectors are very useful in detecting smoke or fire in buildings and so are the important safety parameters.

Mq 135 gas sensor.

The mq 135 gas sensor can detect gases like ammonia nh3 sulfur s benzene c6h6 co2 and other harmful gases and smoke. 1 configuration a or b sensor composed by micro al2o3 ceramic tube tin dioxide sno2 sensitive layer measuring electrode and heater are fixed into a crust made by plastic and stainless steel net. Similar to other mq series gas sensor this sensor also has a digital and analog output pin. Structure and configuration of mq 135 gas sensor is shown as fig.

Sainsmart 2 reviews sku. Increase decrease add to cart. Mq 135 gas sensor brand. 31921952620623 mq 135 module is widely used in air quality control equipments for buildings offices are suitable for detecting of nh3 nox alcohol benzene smoke co2 etc.

1 configuration a or b sensor composed by micro al2o3 ceramic tube tin dioxide sno2 sensitive layer measuring electrode and heater are fixed into a crust made by plastic and stainless steel net. When the level of these gases go beyond a threshold limit in the air the digital pin goes high. Output voltage boosts along with the concentration of the measured gases increases. 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 co2.

The mq 135 gas sensor module has four pins standard male headers as shown above. Discontinued mq 135 air quality sensor hazardous gas detection sensor brand. The mq 135 sensor module comes with a digital pin which makes this sensor to operate even without a microcontroller and that comes in handy when you are only trying to detect one particular gas. Since ao is a varying voltage this pin should be connected to one analog input of a microcontroller the do pin is an open collector digital output but with a pull up resistor onboard that becomes low when the detection level exceeds a predefined level.

5 49 2 5 29 3 4 99 4 share. The air quality information is readable via the ao pin. Structure and configuration of mq 135 gas sensor is shown as fig. Simply we have interfaced mq 135 gas sensor module with arduino and 16 2 lcd module for display.

The smoke sensor we used is the mq 135 sensor.