1PC MQ131 MQ136 MQ137MQ138 sensor ozone ammonia hydrogen sulfide formaldehyde semiconductor sensor

MQ-131 Ozone Sensor

MQ-136 Hydrogen Sulfide Sensor

MQ-137 Ammonia gas sensor

MQ-138 formaldehyde sensor

MQ-139 Freon sensor

If you use this series of sensors for the first time, to avoid damage to the sensor welding

Or it is convenient to debug and replace the sensor. It can be matched with the sensor ceramic seat.

MQ136 Semiconductor gas sensor for hydrogen sulfide gas detection

The gas sensing material used in the MQ136 gas sensor is conductive in clean air.

Tin dioxide (SnO2) with a lower rate. When there is hydrogen sulfide in the environment where the sensor is located

gas, the conductivity of the sensor increases as the concentration of hydrogen sulfide gas in the air increases.

increase. Using a simple circuit, the change in conductivity can be converted to

The output signal corresponding to the concentration.

Applicable to: low-end cost leakage of toxic gases in homes, factories, and commercial places

Monitoring and alarm devices.
Features
*Good sensitivity to H2S gas in a wide concentration range
*Long life and low cost
*Simple drive circuit can

application

*Hydrogen sulfide concentration alarm for household use

*Industrial hydrogen sulfide leak alarm

*Portable hydrogen sulfide detector