Description:

MQ-6 gas sensor can detect propane, butane, LPG with high sensitivity, liquified natural gas. Widely used in low-cost applications with high accuracy.  Suitable for Arduino DSP AVR PIC ARM Raspberry PI

•     100% Brand New and High Build Quality
•     Indication of the signal output
•     Dual signal output (analog output, and TTL level output)
•     TTL output signal is low. (When low output signal light, and can be connected directly to the microcontroller)
•     0 ~ 5V analog output voltage, the higher the concentration, the higher the voltage
•     High sensitivity to hydrogen
•     Can be resistant to ethanol steam, LPG (petroleum), smoke interference
•     Has a long life and reliable stability
•     Fast response and recovery characteristics

Input voltage : DC 5V Power consumption ( current ): 150mA
DO output : TTL digital 0 and 1 ( 0V and 5V)
AO output :0.1V to 4V (Maximum concentration)

Special note: After the sensor is powered up, it takes 20Sec to warm up. Please read sensor data after 20Seconds for accurate values. Heating of sensor is normal.

Application:

Suitable for home or industrial on LPG (liquefied petroleum gas), butane, propane, LNG (liquefied natural gas) detection devices. 
Excellent resistance to ethanol vapor, mist interference.

Pin Connections:    
    VCC: positive power supply (5V)    
    GND: power supply is negative    
    DO: TTL switching signal output    
    AO: analog signal output