Isthebest| MQ-2 Gas Sensor Module

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MQ-2 gas sensor sensitive material used in the clean air low conductivity tin oxide . When there is the environment in which the combustible gas sensor, conductivity sensor with increasing concentration of combustible gases in air increases. Using a simple circuit to convert the change in conductivity of the gas concentration corresponding to the output signal. MQ-2 gas sensor high on gas, propane, hydrogen sensitivity of detection of natural gas and other flammable vapors are also very good. This sensor can detect a variety of flammable gas, is a low-cost sensors for a variety of applications.


Module Applications:
Gas may be used in homes and factories leakage monitoring device suitable for the detection of gas, butane , propane , methane , smoke , etc. ;
Module Features :
1 , using high-quality dual-panel design, with power indicator and TTL signal output instructions;
2 , the switching signal having a DO output and analog output AO ;
3, TTL output valid signal is low . 4 , analog output voltage with the higher concentration of higher voltage.
5, a gas, natural gas, city gas , smoke better sensitivity.
6 , there are four screw holes for easy positioning ;
7 Product dimensions : 32 * 20 * 22 8 , has a long life and reliable stability
9 , rapid response and recovery characteristics

Electrical properties:
Input voltage : DC5V Power consumption : 150mA
DO output : TTL digital 0 and 1 AO output :0.1-0 .3 V , the maximum concentration of a voltage of about 4V
Special note: After the sensor is powered , needs to warm up around 20S, measured data was stable , heat sensor is a normal phenomenon , because the internal