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Amazon.com: MQ-135 Gas Sensor Benzene Alcohol Smoke Detector Air Quality Monitor Module Kit @XYG : Electronics
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MQ-2 with Raspberry PI Pico: Gas Sensor Wiring and MicroPython Code
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Early Wildfire Detection Using a Raspberry Pi Smoke Sensor - Toby Chappell, Kelly Ly, Paola Portillo, Jon Le, Kady Lazarte - Grand Challenges Initiative
MQ-2 Propane Butane Methane Alcohol Gas Sensor ADC121C 12-Bit ADC I2C Mini Module - store.ncd.io
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DIY Smoke Detector Hack (Part 1) - Make a regular smoke detector send a text with Raspberry Pi - YouTube
