Air Quality Control Equipments for Buildings/Offices, Detecting Sensor MQ-135

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

Heater voltage 5V, 31 ohm (40mA consumption)

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
• MQ and air quality sensors (PDF)