MQ-2 Flammable Gas and Smoke Sensor

The MQ-2 Sensor is highly sensitive to smoke, LPG, propane and hydrogen. This sensor has both analog and digital output and a potentiometer for setting the trigger threshold.

Features:

• Using high-quality dual-panel design, with power indicator and TTL signal output instructions
• There are four screw holes for easy positioning
• Analog output voltage with the higher concentration of higher voltage
• TTL output valid signal is low (Low-level signal when the output light can be directly connected to the microcontroller or relay module)
• The switching signal having a DO (TTL) output and analog output AO

Specifications:

• Chip: LM393, ZYMQ-2 gas sensors
• Working Voltage: DC 5V
• AO Output: 0.1-0.3 V (relative to pollution), the maximum concentration of a voltage of about 4V
• DO Output: TTL digital 0 and 1 (0.1 and 5V)
• Input Voltage: DC5V Power consumption (current): 150mA
  

Note: After the sensor is powered, needs wait about 20S, measured data was stable, heat sensor is a normal phenomenon, because the internal heating wire.

We also carry:

• MQ-2 Flammable Gas and Smoke Sensor
• MQ-3 Alcohol Gas Sensor
• MQ-4 Methane Gas Sensor
• MQ-5 LPG and Natural Gas Sensor
• MQ-6 LPG/Isobutane/Propane Gas Sensor
• MQ-7 Carbon Monoxide Gas Sensor
• MQ-8 Hydrogen Gas Sensor
• MQ-9 Carbon Monoxide and Flammable Gas Sensor
• MQ-135 Air Quality Sensor