VOC Sensor MQ138 Breakout
Sale price
€12,95
Regular price
€29,95
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SKU: 333114
Regular price
€29,95
Sale price
€12,95
Add-Ons
Add-Ons
24/7 lifetime customer and technical support
2-year Warranty -no questions asked
Comprehensive Documentation
Open-source everything
Made in EU
Designed and manufactured in Croatia.
In-stock in EU warehouse
Ships from Croatia, fast EU delivery.
Volume discounts
Educational and OEM pricing on request.
2-year warranty
Standard EU 2-year warranty on all Soldered products.
Complimentary technical support
Our engineers answer your questions free of charge.
Breadboard-compatible
2.54 mm pin spacing, drops straight onto any breadboard.
LEGO-compatible
Mounting holes line up with LEGO spacing and peg size.
Description
The MQ138 sensor is specifically designed to detect various gases, with a primary focus on air quality monitoring. While its main target gas is formaldehyde (HCHO), it is also sensitive to a range of other gases, including volatile organic compounds (VOCs - toulen, alcohol, acetone and hydrogen) and other harmful gases commonly found in the environment. It takes a short time to heat up in order to work correctly.
The breakout board works with both digital (DO) and analog signals (AO). The digital output is obtained by setting a threshold value with a potentiometer. The analog output will differ depending on the intensity of the gas.
Product usage tips:
When gas is detected, the LED will start glowing. It will remain off if it doesn't detect anything. Two mounting holes enable easy mounting to surfaces. The board comes with four male headers that need to be soldered.
Technical Specifications
- Voltage: 5V
- Digital(HIGH/LOW) and analog(0V-5V) output
- With LM393 comparator
- Dimensions: 22 x 38 mm / 0.9 x 1.5 inch
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