MQ7 GAS SENSOR
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- Target gas: Carbon Monoxide (CO).
- Detection range: 10 to 10,000 ppm, although typical ranges are often cited as 10–1,000 ppm or 20–2,000 ppm depending on the specific module.
- Operating voltage: 5V DC is standard for the sensor module.
- Heater voltage: The sensor uses a cycling heater voltage to operate.
- High temperature cycle: 5.0V ± 0.1V for 60 ± 1 seconds.
- Low temperature cycle: 1.5V ± 0.1V for 90 ± 1 seconds.
- Heater consumption: Approximately 350 mW.
- Interface: Modules typically provide both an analog and a digital output
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