Joy-iT MQ7 Analog Carbon Monoxide sensor

This analog gas sensor has a small heating part with an electronical chemical sensor.
It is suitable for indoor usage.
The sensor can output exact values only after warmup phase.

Caution: sensor gets hot while usage!

Technical data:

Measurement range: 300 - 10000 ppm

Measureable substances: Carbon monoxide (CO)

Application areas: Detecting gas leaks, gas alarm, robotic, microcontroller projects

Compatible with: Raspberry Pi (with AD-converter), Arduino. etc.

Special features: High sensitivity which can be adjusted by potentiometer, quick reaction time, low temperature detection of gas

Analog Output: Values are processed by the microcontroller

Digital Output: thresholds can be set

Pins: VCC: Voltage supply 5V, GND: Ground, AOUT: Analog Output, DOUT: Digital Output

Loop voltage: ≥ 10 V DC

Heating voltage: 5.0 V ± 0.2 V

Heating resistance: 31 Ω ± 3 Ω at room temperature

Heating power: ≤ 350 mW

Surface resistance of sensitive material: 2 -20 KΩ in 100 ppm CO

Operating temperature: -20 - 50 °C