Gas 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!


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


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

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

Additional information


52 x 20 x 13 mm


6 g

Items shipped




Article No.


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KY-053 Analog-Digital Converter

4 Channel 16-Bit ADC with I2C interface


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