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Detection Smoke Methane Liquefied Gas Sensor Module for Arduino

(MQ-2 MQ-3 MQ-4 MQ-5 MQ-6 MQ-7 MQ-8 MQ-9 MQ-135)
Using high-quality dual-panel design, with power indicator and TTL signal output instructions.
The switching signal has a digital output (TTL) output and analog output.
TTL output valid signal is low. (Low-level signal when the output light can be directly connected to the micro-controller or relay module )
Analog output voltage with the higher concentration of higher voltage
There are four screw holes for easy positioning.
Has a long life and reliable stability
Rapid response and recovery characteristics.
Sensitive material gas sensors used in clean air, low conductivity tin oxide (SnO2)
Input voltage: DC5V Power consumption (current): 150mA
DO output: TTL digital 0 and 1 (0.1 and 5V)
AO output: 0.1-0.3V (relative to pollution), the maximum concentration of a voltage of about 4V
Please note: After the sensor is powered, it needs to warm up around for around 20 seconds for a more accurate reading.  It’s normal for the sensor to get warm because of the internal heating wire, but if it’s hot then something could be wrong.
 
MQ-135 Product Overview:
Can be used for home and factory gas leakage monitoring devices, suitable for liquefied petroleum gas, butane, propane, methane, smoke, ammonia, sulfide, benzene, etc.
 
MQ-2 Product Overview:
Can be used in homes and factories leakage monitoring device suitable for the detection of natural gas, hydrogen, butane, propane, methane, smoke,etc.
 
MQ-3 Product Overview:
Gas sensor sensitivity to alcohol, can resist the interference of gasoline, smoke, water vapor. The sensor can detect a variety of alcohol concentration in the atmosphere
Can be used for on-site detection of motor vehicle drivers (Breathalyzer), but also for detecting other places of ethanol vapor, alcohol detection range: detection range 10 ~ 1000ppm
 
MQ-4 Product Overview:
MQ-4 Methane gas sensor of high sensitivity, propane, butane and has a good sensitivity. The sensor can detect a variety of combustible gases, especially natural gas.
Can be used in homes and factories leakage monitoring device, suitable for the detection of liquefied petroleum gas, butane, propane, methane, smoke and the like.
 
MQ-5 Product Overview: 
Main Chip: LM393, ZYMQ-5 gas sensor for liquefied petroleum gas (LPG), natural gas, city gas, best sensitivity.
Can be used for LPG detection, natural gas, coal gas monitoring device suitable for home or industrial. Excellent resistance to alcohol, smoke interference ability
 
MQ-6 Product Overview: 
MQ-6 gas sensor for propane, butane, LPG high sensitivity, natural gas and has a good sensitivity. The sensor can detect a variety of combustible gas, suitable for a variety of applications.
Suitable for home or industrial on LPG (liquefied petroleum gas), butane, propane, LNG (liquefied natural gas) detection devices. Excellent resistance to ethanol vapor, mist interference.
 
MQ-7 Product Overview:
High-low temperature cycling detection mode (1.5V heating) carbon monoxide detector, conductivity sensor with the increasing concentration of carbon monoxide gas in the air increases, high-temperature (5.0V heating) cleaning cryo-adsorption stray gases. Using a simple circuit to change the conductivity, concentration of the gas is converted to the corresponding output signal. MQ-7 gas sensor has a high sensitivity for carbon monoxide, this sensor can detect a variety of gases containing carbon monoxide, is a low-cost sensor for a variety of applications
Can be used for home and factory gas leakage monitoring devices, suitable for liquefied petroleum gas, butane, propane, methane, smoke, etc.
 
MQ-8 Product Overview:
MQ-8 hydrogen gas sensor of high sensitivity monitoring of other hydrogen-containing gases.
Suitable for home or industrial hydrogen leak monitoring devices. Can not interfere with ethanol vapor, soot, carbon monoxide and other gases
 
MQ-9 Product Overview:  
High-low temperature cycling detection mode (1.5V heating) detecting carbon monoxide sensor’s conductivity increases with the air of carbon monoxide gas concentration increases, spurious adsorption at high temperature (5.0V heat) detection of combustible gases methane, propane, and cryogenic cleaning gas.  MQ-9 gas sensor for high carbon monoxide, methane, liquefied petroleum gas sensitivity, this sensor can detect a variety of carbon monoxide and combustible gas, is a low-cost sensor suitable for a variety of applications.
Weight 40 g
Dimensions 260 × 160 × 20 mm
Module Type

MQ-2, MQ-3, MQ-4, MQ-5, MQ-6, MQ-7, MQ-8, MQ-9, MQ-135

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