MQ3 Alcohol Gas Sensor Module

Description

MQ3 alcohol gas sensor detects the concentration of alcohol gas in the air and ouputs its reading as an analog voltage. The concentration sensing range of 0.04 mg/L to 4 mg/L is suitable for breathalysers (the legal limit of breath alcohol concentration, or BrAC, in most US states is 0.08 grams per 210 liters, or 0.38 mg/L). The sensor can operate at temperatures from -10 to 50°C and consumes less than 150 mA at 5 V. Please read the datasheet for more information about the sensor.

MQ3 Alcohol Gas Sensor Module Features

• 5V DC or AC circuit
• Requires heater voltage
• Operation Temperature: -10 to 70 degrees C
• Heater consumption: less than 750mW

Data Sheet