{"product_id":"mq-3-alcohol-ethanol-sensor","title":"MQ-3 Alcohol-Ethanol Sensor","description":"\u003cp\u003e\u003cspan data-sheets-root=\"1\"\u003e\u003cstrong\u003eMQ-3 Alcohol Gas Sensor\u003c\/strong\u003e\u003cspan\u003e\u003cbr\u003eThe sensor uses a Tin Dioxide (SnO_2) sensing layer. When alcohol vapours come into contact with the heated sensing element, a chemical reaction occurs that releases electrons, decreasing the sensor's internal resistance. The more alcohol present, the lower the resistance and the higher the output voltage.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-sheets-root=\"1\"\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003cstrong\u003eWhy it’s the Choice for Breathalyzers:\u003c\/strong\u003e\u003cspan\u003e\u003cbr\u003e• High Ethanol Specificity: While it can react to other gases, the MQ-3 is tuned specifically to be most sensitive to alcohol, making it much more accurate for sobriety-related projects than a general-purpose MQ-2.\u003cbr\u003e• Dual Output Utility: \u003cbr\u003e* Analog (A0): Essential for breathalysers. It provides a variable voltage that you can map to BAC (Blood Alcohol Content) or mg\/L concentrations.\u003cbr\u003e* Digital (D0): Perfect for safety interlocks. For example, it can trigger a relay to prevent a motor from starting if alcohol is detected in a cabin.\u003cbr\u003e• Fast Recovery: After a \"positive\" test, the sensor clears itself relatively quickly, allowing for a new test once the alcohol vapours have dissipated from the sensor chamber.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-sheets-root=\"1\"\u003e\u003cstrong\u003e\u003cbr\u003eTechnical Capabilities:\u003c\/strong\u003e\u003cspan\u003e\u003cbr\u003e• Detection Concentration: 0.05 mg\/L to 10 mg\/L of alcohol.\u003cbr\u003e• Operating Voltage: 5V (Required for the internal heater).\u003cbr\u003e• Sensitivity Adjustment: The onboard potentiometer allows you to set the digital threshold, which is useful for creating a \"Pass\/Fail\" indicator light.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-sheets-root=\"1\"\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eBest For:\u003c\/strong\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan\u003eThe MQ-3 is the primary sensor for portable breathalysers, alcohol-ignition interlock prototypes, distillery safety monitors, and environmental alcohol vapor sensing.\u003cbr\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"TinkEdge","offers":[{"title":"Default Title","offer_id":46404505960647,"sku":"TE-GASSE-066","price":141.24,"currency_code":"INR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0774\/6620\/6407\/files\/MQ3_1.png?v=1776442602","url":"https:\/\/shop.tinkedge.tech\/products\/mq-3-alcohol-ethanol-sensor","provider":"TinkEdge","version":"1.0","type":"link"}