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

Features:
1. Signal output instructions;
2. Dual signal output (analog output， and TTL level output);
3. TTL output valid signal is low， can be connected directly to the microcontroller;
4. 0 ~ 5V analog output voltage， the higher the concentration the higher the voltage;
5. Has a high sensitivity and good selectivity to ethanol ;
6. Has a long life and reliable stability;
7. Rapid response recovery characteristics;

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

Package included:
1x Ethanol Sensor