MQ-3 Alcohol Sensor Breathalyzer Gas Detector Ethanol for Arduino Rasp – eElectronicParts
Alcohol Gas Sensor - MQ-3 - SEN-08880 - SparkFun Electronics
MQ-8 Módulo sensor de hidrógeno - Geek Factory
Kit de sensores de gas MQ para Arduino
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Kit Sensor de Gás MQ-2 MQ-3 MQ-4 MQ-5 MQ-6 MQ-7 MQ-8 MQ-9 MQ-135 / / Gás / Casa da Robótica - Loja de Kits para Robótica Educacional com Arduino, Internet das Coisas,
Amazon.com: BONATECH 9 in 1 MQ Sensor Modules Kit Project Super Starter Kits for Gas Detection : Industrial & Scientific