• Sensitive for benzene, alcohol, smoke
• Output voltage boosts along with the concentration of the measured gases increases
• Fast response and recovery
• Adjustable sensitivity
• Signal output indicator

Specifications

• Power: 2.5V ~ 5.0V
• Dimension: 40.0mm * 21.0mm
• Mounting holes size: 2.0mm

Applications

• Air quality monitor

How to Use

In the case of working with a MCU:

• VCC ? 2.5V ~ 5.0V
• GND ? power supply ground
• AOUT ? MCU.IO (analog output)
• DOUT ? MCU.IO (digital output)

Photos

Downloads

Development resources: demo codes, schematic, datasheets, etc.
Wiki: www.waveshare.com/wiki/MQ-135_Gas_Sensor

Page Content

Weight: 0.011 kg

• MQ-135 Gas Sensor × 1
• 4-pin custom connector jumper wire × 1

Selection Guide