Pololu Carbon Monoxide Gas Sensor MQ-7

Artikelnummer: PO1482

Hersteller-Artikelnummer: 1482

This semiconductor gas sensor detects the presence of Carbon Monoxide at concentrations from 10 to 10,000 ppm. The sensor?s simple analog voltage interface requires only one analog input pin from your microcontroller.

Kategorie: Gassensoren

7,89 €

inkl. 19% USt.,

sofort verfügbar

Lieferzeit: 1 bis 3 Tage




This Carbon Monoxide (CO) gas sensor detects the concentrations of CO in the air and ouputs its reading as an analog voltage. The sensor can measure concentrations of 10 to 10,000 ppm.The sensor can operate at temperatures from -10 to 50°C and consumes less than 150 mA at 5 V. Please read the MQ7 datasheet (185k pdf) for more information about the sensor.

Gas sensor with orange plastic case bottom view.


Connecting five volts across the heating (H) pins keeps the sensor hot enough to function correctly. Connecting five volts at either the A or B pins causes the sensor to emit an analog voltage on the other pins. A resistive load between the output pins and ground sets the sensitivity of the detector. The resistive load should be calibrated for your particular application using the equations in the datasheet, but a good starting value for the resistor is 10 k?.

We offer two breakout boards that make it easier to interface with these sensors: a Pololu carrier board and a SparkFun carrier board. The Pololu version is shown below.

Pololu MQ gas sensor carrier with sensitivity-setting resistor soldered in the vertical orientation.

People often buy this product together with:

Pololu Carrier for MQ Gas Sensors (Bare PCB Only) Pololu Carrier for MQ Gas Sensors (Bare PCB Only)
Flammable Gas & Smoke Sensor MQ-2 Flammable Gas & Smoke Sensor MQ-2
Methane Gas Sensor MQ-4 Methane Gas Sensor MQ-4

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