![](https://mtecno.pt/5059-large_default/mq-3-alcohol-ethanol-sensor-breath-gas-detection-module-for-arduino.jpg)
![](https://mtecno.pt/5539-home_default/mq-4-methane-natural-gas-sensor.jpg)
MQ-4 Methane Natural gas...
![](https://mtecno.pt/537-home_default/obstacle-avoidance-sensor-module-infrared-reflection-photoelectric-control.jpg)
Obstacle Avoidance Sensor...
![](https://mtecno.pt/5541-home_default/mq5-home-or-industrial-on-lpg-natural-gas-coal-gas-sensor.jpg)
MQ-6 Gas Sensor
![](https://mtecno.pt/4856-home_default/5v-infrared-line-track-tracking-tracker-sensor-module-for-arduino.jpg)
5V Infrared Line Track...
![](https://mtecno.pt/5545-home_default/mq5-home-or-industrial-on-lpg-natural-gas-coal-gas-sensor.jpg)
MQ-135
![10kg Aluminium Alloy Small Scale Weighing Pressure Sensor With HX711 AD Module](https://mtecno.pt/5195-home_default/10kg-aluminium-alloy-small-scale-weighing-pressure-sensor-with-hx711-ad-module.jpg)
![](https://mtecno.pt/5544-home_default/mq5-home-or-industrial-on-lpg-natural-gas-coal-gas-sensor.jpg)
MQ9 - carbon monoxide,...
![HY-SRF05 Ultrasonic Distance Sensor Module Measuring Sensor Module](https://mtecno.pt/260-home_default/hy-srf05-ultrasonic-distance-sensor-module-measuring-sensor-module.jpg)
HY-SRF05 Ultrasonic...
![](https://mtecno.pt/5543-home_default/mq5-home-or-industrial-on-lpg-natural-gas-coal-gas-sensor.jpg)
![](https://mtecno.pt/5073-home_default/3pcs-lm393-speed-sensor-detection-speed-module-for-arduino.jpg)
LM393 Speed Sensor...
![Soil Hygrometer Humidity Detection Module Moisture Sensor For Arduino](https://mtecno.pt/264-home_default/soil-hygrometer-humidity-detection-module-moisture-sensor-for-arduino.jpg)
Soil Hygrometer Humidity...
![](https://mtecno.pt/5540-home_default/mq5-home-or-industrial-on-lpg-natural-gas-coal-gas-sensor.jpg)
Termos de Uso e Garantias
Para produtos em armazém do fornecedor, os prazos de entrega estão especificados.
Prazo legal para cancelamento de encomenda ou devolução.
MQ-3 Alcohol Ethanol Sensor Breath Gas Detection Module For Arduino
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
Package included:
1 X Alcohol module