Manufacturer	Part Number	Description
HANWEI ELETRONICS	MQ-3	GAS SENSOR
HANWEI ELETRONICS	MQ-5	GAS SENSOR
HANWEI ELETRONICS	MQ-9	GAS SENSOR
HANWEI ELETRONICS	MQ-4	GAS SENSOR
HANWEI ELETRONICS	MQ-8	GAS SENSOR
HANWEI ELETRONICS	MQ-303A	GAS SENSOR