توضیحات

Description:

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: -10℃ to 65℃,

Humidity: ≤95%RH

Storage conditions: Temperature:-20℃-70℃,Humidity:≤ 70%RH

Features:

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;

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