{"title":"Alcohol Gas Sensor - MQ-3","handle":"alcohol-gas-sensor-mq-3","url":"/products/alcohol-gas-sensor-mq-3","description":"The MQ-3 is an alcohol gas sensor suitable for detecting alcohol concentration in the air, similar to a breathalyser. It provides an analog resistive output based on alcohol concentration, with high sensitivity and fast response time. The drive circuit is simple — just one resistor is needed, and the output can be read by a 0–3.3V ADC.\n\nKey Features\n\n\nAlcohol Detection – High sensitivity to alcohol vapour concentration\n\nAnalog Output – Resistive output proportional to gas concentration\n\nSimple Interface – Requires only one external resistor\n\nOperating Voltage – 5V DC or AC circuit\n\nHeater Consumption – Less than 750mW\n\nOperating Temperature – -10°C to 70°C\n\n\nSpecifications\n\n\nDiameter – 16.8mm\n\nHeight – 9.3mm (without pins)\n\n\nIdeal For\n\nBreathalyser projects\nAir quality monitoring\nArduino and microcontroller gas detection projects\n\n\nPackage Contents\n\n1× MQ-3 alcohol gas sensor\n\n\n\nNote: This sensor requires a heater voltage to operate. Refer to the datasheet for ppm conversion details and warm-up requirements.\n\n\nResources\n\nMQ-3 Datasheet (PDF)\n","vendor":"SparkFun","product_type":"physical","in_stock":true,"options":[],"variants":[{"id":10284,"title":"Default Title","sku":"SF-SEN-08880","price":17.8,"on_sale":false,"in_stock":true,"available_quantity":12,"option1":"Default Title"}]}