MQ3 MQ 3 Alcohol Ethanol Decector Gas Sensor Module Board For Arduino Breathalyser Gas Checker Breath
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MQ3 MQ 3 Alcohol Ethanol Decector Gas Sensor Module Board For Arduino Breathalyser Gas Checker Breath
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MQ3 MQ-3 Alcohol Ethanol Decector Gas Sensor Module Board For Arduino Breathalyser Gas Checker Breath Detector DC 5V

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Features:
1. High quality double panel design, with power indicator and TTL output signal.
2. Have DO switch signal(TTL) output and AO analog signal output.
3. TTL output signal for low level effectively. (when the low output electric signal lights at ordinary times, can be directly connect single chip microcomputer or relay module)
4. Analog output voltage with concentration, the higher concentration, the higher voltage.
5. Has better sensitivity with the liquefied petroleum gas, natural gas, city gas, smoke.
6. Has long service life and reliable stability
7. Rapid response recovery features

Specifications:
Input voltage: DC5V
Power consumption (current) : 150 mA
DO output: TTL digital 1 and 0 (0.1 and 5 V)
AO output: 0.1-0.3 V (pollution-free)
Highest concentration of voltage: Approx 4 V
Detection range of alcohol: detection range of 10 ~ 1000 PPM

Connection mode:
1. VCC: Positive (5 v)
2. GND: Connect power negative
3. DO: TTL switch signal output
4. AO: Analog signal output Package Included:

1PCS * MQ3 Alcohol Sensor Module Breath Gas Detector Ethanol Detection for Arduino New

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N.B.: If the seller provides the "Longer Protection" service on this product, you may ask for refund up to 15 days after order completion.
Seller Service On-time DeliveryIf you do not receive your purchase within 60 days, you can ask for a full refund before order completion (when you click "Confirm Order Received" or exceed confirmation timeframe).

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Price:  US $1.42 / piece
Sale Price:  US $1.29 / piece
from AliExpress
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