Features :
1. Good sensitivity to Combustible gas in a wide range
2. High sensitivity to LPG, Propane, and Hydrogen
3. Long life and low cost
4. Simple drive circuit
5. Can be used as a Digital or analog sensor
6. The Sensitivity of Digital pin can be varied using the potentiometer
7. Can be used to Measure or detect LPG, Alcohol, Propane, Hydrogen, CO and even methan

Features:

1. Good sensitivity to CO/Combustible Gas
2. High sensitivity to Methane, Propane, and CO
3. Long life and low cost
4. Simple drive circuit
5. Input voltage: DC 5±0.2V
6. Current Consumption: 150mA

Features:

1. Detecting range: 300~10000ppm
2. Signal output indicator
3. Dual Signals output (analog output and TTL output)
4. TTL output signal is low level, allows to connect with SCM directly
5. Analog output 0~5V voltage
6. High sensitivity
7. Long working lifetime and stable performance
8. Quick response and recovery

Features :
1. High sensitivity to LPG, natural gas, town gas.
2. Small sensitivity to alcohol, smoke.
3. Stable and long life.
4. Simple drive circuit.
5. Fast response.