MQ-9 Carbon Monoxide, Methane and LPG Gas Sensor Module
- Input voltage: DC 5V
- Power: 150mA
- DO output: TTL digital 0 and 1 (0.1 and 5V)
- AO output: 0.1-0.3V (relatively clean), the highest concentration voltage is about 4V.
- Suitable for home or factory gas leakage monitoring devices.
- Have better sensitivity to Carbon Monoxide, Methane and LPG Gas.
- High quality dual-panel design, with power indicator and TTL signal output instructions.
- DO switching signal (TTL) output and AO analog signal output.
- TTL output valid signal is low. (When the output low signal is on, it can be directly connected micro-controller or relay module.)
- Analog output voltage: the higher concentration, the higher voltage.
- Four screw holes, easy positioning.
- Long life and stability, quick response and resume.
MQ5 Module
- Operating voltage: 5V
- Interface Type: Analog & Digital
- Dual signal output (analogue output, and TTL level output)
- Detecting concentration：200-10000ppm
- The TTL output signal is low. (When low output signal light, and can be connected directly to the microcontroller
- High Sensitivity to LPG, Natural Gas, Town Gas
- small sensitivity to smoke & alcohol
- Low Cost.
- Stable & Long Life.
- Simple drive circuit.
- Fast response.Â
- Onboard Power indication.
- Adjustable sensitivity
- Dimension: 32mm x 22m x 27mm
MQ5 SENSOR
- Power requirements: VCC - 5V±0.1
- DO output: TTL digital 0 and 1 (0.1 and 5V)
- AO output: 0.1-0 .3 V (relative to pollution), the maximum concentration of a voltage of about 4V
- Detection Gas: LPG, natural gas, town gas
- Detection Concentration: 300-10000ppm
- Heating voltage: 5V±0.1
-  Load resistance: 20KΩ
-  Heater resistance: 31±10%
- Â Heating consumption: less than 800mw
- Operating temperature:-10 to 50°C
- Related humidity less than 95%Rh
- Sensing Resistance: 10KΩ- 60KΩ (1000ppm CH4)
- Preheat time: Over 24 hour
MQ6 Module
- Interface Type: Analog & Digital
- Working voltage: DC 5V
- Dual signal output (analogue output, and TTL level output)
- Detection Gas: Propane, Butane, and LPG
- Detection range: 300 to 10000ppm
- The TTL output signal is low. (When low output signal light, and can be connected directly to the microcontroller)
- Onboard Power indication
- Good sensitivity to Combustible gas in a wide range
- Can be resistant to ethanol steam, LPG (petroleum), smoke interference.
- Simple drive circuit
- An indication of the signal output
- High sensitivity to hydrogen.
- Has a long life and reliable stability.
- Fast response and recovery characteristics.
- Adjustable sensitivity
- Dimension: 32mm x 22m x 27mm
MQ6 SENSOR
- Power requirements: VCC - 5V±0.1
- DO output: TTL digital 0 and 1 (0.1 and 5V)
- AO output: 0.1-0 .3 V (relative to pollution), the maximum concentration of a voltage of about 4V
- Detection Gas: LPG, iso-butane, propane, and LNG
- Detection Concentration: 200-10000ppm
- Heating voltage: 5V±0.1
-  Load resistance: 20KΩ
-  Heater resistance: 33±10%
- Â Heating consumption: less than 750mw
- Operating temperature:-10℃-50℃
- Related humidity less than 95%Rh
- Sensing Resistance: 10KΩ- 60KΩ (1000ppm LPG)
- Preheat time: Over 24 hour
- High sensitivity to LPG, iso-butane, propane
- Small sensitivity to alcohol, smoke.
- Fast response
- Simple drive circuit