Carbon Monoxide Sensor MQ-7

Description: SNS-MQ7 is sensitive air quality sensor that detects carbon monxide.

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

Features:

• Detects carbon monoxide in the air.
• 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-MQ7 datasheet
• Setting up SNS-MQx sensors
• Experimenting with gas sensors and Arduino
• MQ and air quality sensors (PDF)