{"title":"Gravity: Arduino CO2 Gas Sensor","handle":"gravity-arduino-co2-gas-sensor","url":"/products/gravity-arduino-co2-gas-sensor","description":"The Gravity CO2 Gas Sensor uses an MG-811 electrochemical sensing element to detect carbon dioxide concentration in the air. The output voltage decreases as CO2 concentration increases, and an onboard potentiometer lets you set a threshold for a digital on/off signal output.\n\nAn onboard heating circuit with internal voltage boosting to 6V ensures the sensor operates at its optimal temperature. The Gravity analog interface allows plug-and-play connection to compatible Arduino expansion shields. Note that this is an electrochemical sensor suited to qualitative CO2 analysis — for quantitative measurement, consider an infrared CO2 sensor.\n\nKey Features\n\n\nSensor – MG-811 electrochemical CO2 sensing element\n\nOperating Voltage – 5V\n\nInterface – Gravity analog + one digital threshold output\n\nSensitivity – Highly sensitive to CO2, low sensitivity to alcohol and CO\n\nOnboard Heating Circuit – Internal 6V boost for optimal sensor temperature\n\nSignal Conditioning – Onboard amplification circuit for output signal\n\nLow Dependency – Minimal humidity and temperature influence\n\nImmersion Gold PCB – High-quality surface finish\n\nDimensions – 32 × 42mm\n\n\nIdeal For\n\nAir quality monitoring\nFermentation process control\nIndoor CO2 concentration detection\n\n\nPackage Contents\n\n1× Gravity CO2 gas sensor\n\n\nResources\n\nWiki (DFRobot)\nSchematic (PDF)\nPCB layout (PDF)\nMG-811 datasheet (PDF)\n","vendor":"DFRobot","product_type":"physical","in_stock":true,"options":[],"variants":[{"id":11130,"title":"Default Title","sku":"DF-SEN0159","price":83.81,"on_sale":false,"in_stock":true,"available_quantity":240,"option1":"Default Title"}]}