SNS-MQ135 (Olimex) AIR QUALITY CONTROL EQUIPMENTS FOR BUILDINGS/OFFICES, DETECTING

https://www.olimex.com/Products/Components/Sensors/SNS-MQ135/

AIR QUALITY CONTROL EQUIPMENTS FOR BUILDINGS/OFFICES, DETECTING

SNS-MQ135 is sensitive air quality sensor that detects NH3, NOx, alcohol, benzene, smoke, CO2, etc.

• Heater voltage 5V, 31 ohm (40mA consumption)
• The board has digital and analog output.

FEATURES

• Detects NH3, NOx, alcohol, benzene, smoke, CO2, etc.
• Operating voltage 5V
• Operating current 40mA
• Both digital and analog output
• Popular sensor - a lot of examples available for different platforms 
• Port explanation : AO for analog output, DO for digital output, GND for ground, VCC for 5V voltage input

DOCUMENTS

• SNS-MQ135 datasheet
• Setting up SNS-MQx sensors
• Experimenting with gas sensors and Arduino