![enter image description here][1] **DESCRIPTION** How to choose a gas sensor ? Alcohol sensor is semiconductor sensor for alcohol detection. It has good sensitivity and fast response to alcohol, suitable for portable alcohol detector. **Specifications** Power requirements: 5 VDC @ ~120 mA (heater on) Detection Gas: Alcohol Concentration: 20-1000ppm Alcohol Interface: 1 TTL compatible input (SEL), 1 TTL compatible output (DAT) Dimension: 40×20×12mm Heater Voltage: 0.9V ± 0.1V AC or DC Heater Current: 120±20mA **Application Ideas** Alcohol level over-limit alarm Stand-alone/background sensing device Environmental monitoring equipment **Documents** Please visit our [wiki][2] page for more info about this product. It will be appreciated if you can help us improve the documents, add more demo code or tutorials. For technical support, please post your questions to our forum. More information about gas sensor, please refer to this [manual][3]. For more detail, please visit: http://www.seeedstudio.com/item_detail.html?p_id=764 [1]: /editor/20160711/5783ba9dda540.png [2]: http://garden.seeedstudio.com/index.php?title=Twig_-_Alcohol_Sensor [3]: http://www.seeedstudio.com/wiki/How_to_choose_A_Gas_Sensor