Product description

Specifications:
Model: MQ-2.
Chip: LM393, ZYMQ-2 Gas Sensors.
Working Voltage: 5V DC.
Current: 150 mA.
Pin Definition: 1-Output, 2-GND, 3-VCC.
Dual Signal output: Analog output and TTL level output.
DO Output: TTL digital quantity 0 and 1 (0.1 and 5V).
AO output: 0.1-0.3v (relatively pollution-free), the highest concentration voltage is about 4V.
Gas Detection: LPG, i-butane, propane, methane, alcohol, hydrogen and smoke.
Size: 32x22x27mm/1.26x0.87x1.06Inches(LxWxH).
Package: 1PC.
Description:
The MQ2 sensor is used to detect combustible and harmful gases for consumer and industrial applications, the gases this sensor can detect are: LPG, i-butane, propane, methane, alcohol, hydrogen and smoke, these gases are not only highly combustible but also harmful.
The sensitivity of MQ2 sensor can be adjusted to suit the requirements of the application via a manual potentiometer located on the back of the sensor.
The output voltage from the Gas sensor increases when the concentration of gas increases.

Special reminder: After the sensor is powered on, it needs to preheat 20S or so, and the measured data is stable. The sensor heating is a normal phenomenon, because there is a heating wire inside, it is abnormal if it is hot.


Notes:
All dimensions are measured manually and there may be small deviations.
The color may have different as the difference display.

Package Content:
1 x Sensor Modules