The MQ-3 Gas Sensor Module is specifically designed to detect alcohol vapor in the range of 0.04 mg/L to 4 mg/L, making it suitable for breathalyzer applications.
Like other MQ series sensors, it provides an analog voltage output proportional to gas concentration, allowing accurate measurement within the typical alcohol detection range.
The sensor comes mounted on a carrier board and operates at 5V, offering both analog and digital (TTL level) outputs, making it easy to interface with Arduino and other microcontrollers.
Technical Specifications:
- Operating Voltage: 5V
- Detection Range: 0.04 – 4 mg/L (alcohol vapor)
- Output Types: Analog and digital (TTL)
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