An Overview about MQ137 Sensor The MQ137 is basically an Ammonia (NH₃) gas sensor. The sensor includes tin dioxide as its sensing element. The SnO2 (tin dioxide)has lower conductivity in pure air. When the air … Read more
ammonia gas
An Overview about MQ137 Sensor The MQ137 is basically an Ammonia (NH₃) gas sensor. The sensor includes tin dioxide as its sensing element. The SnO2 (tin dioxide)has lower conductivity in pure air. When the air … Read more