MQ-3 Alcohol Ethanol Sensor Breath Gas Detection Module

Signal output instructions:
Dual signal output (analog output, and TTL level output);
TTL output valid signal is low, can be connected directly to the microcontroller;
0 ~ 5V analog output voltage, the higher the concentration the higher the voltage;
Has a high sensitivity and good selectivity to ethanol vapor;
Has a long life and reliable stability;
Rapid response recovery characteristics;


Features

• The main chip: LM393, MQ-3 gas sensor
  
• Operating voltage: DC3-5V
  
• Response time: 10s (70% Response)
  
• Recovery time: 30s (70% Response)
  
• Heating resistance: 31±3
  
• Heating Current: 180mA
  
• Heating Voltage: 5V±0.2V
  
• Heating Power: 900mW
  
• Detect Voltage: 15V
  
• Ambient Temperature: -10 to 65,
  
• Humidity: 95%RH
  
• Storage conditions: Temperature:-20-70,Humidity: 70%RH

Applications

For motor vehicle drivers and other non-drinking and operating personnel on-site testing, also used in other places of ethanol vapor detection, detection of alcohol: detection range of 10 to 1000ppm

What's in the box?

1 X Alcohol sensor module

Resources

Analog to Digital converter not included
Wiki
Note: Stock is currently available in South Africa for national shipping!