This sensor module has an MQ-8 as the sensor component and has a protection resistor and an adjustable resistor on-board. The MQ-8 gas sensor is highly sensitive hydrogen and less sensitive to alcohol, and cooking fume. It could be used in gas leakage detection appliance in family and industry. The resistance of the sensor component changes as the concentration of the target gas changes.
Size: 32 mm X22mm X27mm
Main chip: the LM393, MQ-8 gas sensor
Working voltage: DC5V
1. With a signal output instructions.
2. Dual signal output (TTL level output and analog output)
3. TTL output valid signal for low level. (when the low output electric signal lights at ordinary times, can be directly pick up SCM)
5. Analog 0 ~ 5 v voltage, the higher the concentration, the higher the voltage.
6. High sensitivity to hydrogen
7. Can be resistant to ethanol steam, LPG (petroleum), smoke interference
8. Has a long service life and reliable stability
9. Quick response recovery features
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MQ-8 Sensor Description:
MQ-8 gas sensor sensitive material used in clean air conductivity is lower tin dioxide (SnO2). When the sensor is present in the environment in which the combustible gas, the sensor’s conductivity increases with the concentration of combustible gases in air increases. Using a simple circuit can be converted to the change in conductivity of the gas concentration with the corresponding output signal. MQ-8 hydrogen gas sensor of high sensitivity, the monitoring of the other hydrogen-containing gas is also very satisfactory. The sensor can detect a variety of hydrogen-containing gas, in particular, city gas, is a low-cost sensors for a variety of applications.