MQ-4 Gas Sensor
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$2.50MQ-4 Gas Sensor Module detects the presence of methane (CNG) gas at concentrations from 300 ppm to 10,000 ppm, a range suitable for detecting gas leaks. The sensor’s simple analog voltage interface requires only one analog input pin from your microcontroller. Specifications : Power requirements : VCC – 5V±0.1 DO […]