Carbon Monoxide Sensor Module – MQ-7

This is a simple-to-use Carbon Monoxide (CO) sensor, suitable for sensing CO concentrations in the air. The MQ-7 can detect CO-gas concentrations anywhere from 20 to 2000ppm.

This sensor has high sensitivity and a fast response time. The sensor’s output is an analog resistance. The drive circuit is very simple; all you need to do is power the heater coil with 5V, add a load resistance, and connect the output to an ADC.

This sensor comes in a package similar to our MQ-3 alcohol sensor and can be used with the breakout board below.

Specifications

• LEDs for output and power
• Output sensitivity adjustable
• Analog output 0V to 5V
• Digital output 0V or 5V
• Concentration : 0.05 mg/L ~ 10 mg/Co
• Operating Voltage : 5V ±0.1
• Current Consumption : 150mA
• Operation Temperature : -10°C ~ 70°C
• Module Size (LxWxH):19x14x50mm
• Weight: 6g.