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
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