$6 2Pcs MQ-3 Alcohol Gas Sensor Module, Ethanol Detector Breath Gas Industrial Scientific Test, Measure Inspect $6,Sensor,Breath,Gas,Alcohol,Module,,Ethanol,Gas,u-car.ru,Industrial Scientific , Test, Measure Inspect,MQ-3,2Pcs,/charnel1361747.html,Detector $6 2Pcs MQ-3 Alcohol Gas Sensor Module, Ethanol Detector Breath Gas Industrial Scientific Test, Measure Inspect $6,Sensor,Breath,Gas,Alcohol,Module,,Ethanol,Gas,u-car.ru,Industrial Scientific , Test, Measure Inspect,MQ-3,2Pcs,/charnel1361747.html,Detector 2Pcs MQ-3 Alcohol Gas Popular standard Sensor Module Ethanol Breath Detector 2Pcs MQ-3 Alcohol Gas Popular standard Sensor Module Ethanol Breath Detector

2Pcs MQ-3 Alcohol Gas Popular standard Sensor Import Module Ethanol Breath Detector

2Pcs MQ-3 Alcohol Gas Sensor Module, Ethanol Detector Breath Gas


2Pcs MQ-3 Alcohol Gas Sensor Module, Ethanol Detector Breath Gas


Product description

Detailed Test Parameters:
Model: MQ-3
Detecting gas: alcohol vapor
Detection concentration: 0.04-4mg/L alcohol
Standard circuit condition: Loop voltage VC 24DC
Heating voltage :VH 5.0±0.2V AC/DC
Load resistance: RL adjustable
Gas sensor characteristics under standard test condition: Heating resistor 31Ω±3Ω
Heating power consumption: 90mW
Sensitive surface resistance: 2KΩ-20KΩ (in 0.4mg/L alcohol)
Sensitivity: Rs (in air) / Rs (0.4mg / L alcohol) 5
Concentration slope: 0.6 (R300ppm/R100ppm alcohol)
Standard test conditions: 20±2; 65%±5% RH
Standard test circuit: 5.0V ± 0.1V
Warm-up time: 48 hours
Electrical Properties:
Input voltage: DC5V
Power consumption (current ): 150mA
DO output: TTL digital 0 and 1 ( 0.1 and 3.3V)
AO output: 0.1-0 .3V,  the highest concentration voltage is about 4V
1. VCC: connected to the positive pole of the power supply
2. GND: connected to the negative power supply
3. DO: TTL switching signal output
4. AO: analog signal output

Package list:
2 x Alcohol Gas Sensor

2Pcs MQ-3 Alcohol Gas Sensor Module, Ethanol Detector Breath Gas

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