MQ-4 Gas Methane Sensor Module for Arduino

MQ-7 Carbon Monoxide Sensor Module. The sensor detects the concentration of CO (carbon monoxide) and flammable gases. It has a goldpin connector raster 2.54 mm. It is powered by 5 V. It has digital and analogue outputs, which makes it compatible with most runtime modules including Arduino.

MQ-2 Gas and Smoke Module Sensor Detector Methane Propane Butane LPG features:
- Main chip: MQ-2 flammable gas and smoke sensor and comparator LM393
- Working voltage: 5V
- Current: 150mA
- Digital output: TTL 0/1
- Analog output: analog voltage sensing value
- Quick response features:
- Concentration detection:
  200ppm - 5000ppm LPG, propane
  300ppm - 5000ppm butane
  5000ppm - 20000ppm methane
  300ppm - 5000ppm H2
  100ppm -2000ppm alcohol
- Adjustable sensitivity with the potentiometer
- Size: 32mm x 20mmx 18mm

MQ-8 Hydrogen Gas Sensor Module features:
- Main chip: MQ-8 methane sensor and comparator LM393
- Working voltage: 5V
- Current: 150mA
- Digital output: TTL 0/1
- Analog output: analog voltage sensing value
- Quick response features:
- Detection concentration:
  100ppm- 10000ppm hydrogen H2
- Adjustable sensitivity with the potentiometer
- Size: 32mm x 20mmx 18mm

MQ-9 Carbon Monoxide Sensor Module features:
- Main chip: MQ-9 methane sensor and comparator LM393
- Working voltage: 5V
- Current: 150mA
- Digital output: TTL 0/1
- Analog output: analog voltage sensing value
- Quick response features:
- Detection concentration:
   20ppm- 2000ppm carbon monoxide
   500ppm- 10000ppm methane CH4
   500ppm- 10000ppm LPG
- Adjustable sensitivity with the potentiometer
- Size: 32mm x 20mmx 18mm

The ZP07-MP503 air quality module offers high sensitivity with low power consumption and long life. Calibration before shipment from 10 seconds to 3 minutes max. with automatic warm-up function. Automatic fault check.

MQ-6 Gas Methane Sensor Module for Arduino features:
- Main chip: MQ-6 methane sensor and comparator LM393
- Working voltage: 5V
- Current: 150mA
- Digital output: TTL 0/1
- Analog output: analog voltage sensing value
- Quick response features:
- Detection concentration:
- 200ppm- 10000ppm LPG, LNG
- Adjustable sensitivity with the potentiometer
- Size: 32mm x 20mmx 18mm

ZPHS01B is an all-in-one air quality module, which integrates laser dust sensor, infrared CO2 sensor, electrochemical formaldehyde, ozone and carbon monoxide sensors, VOC sensor, NO2 sensor, temperature and humidity sensor.

Air quality sensor with high precision whose SDS011 uses laser dispersion to detect particle concentration between 0.3 and 10 um in the air.

With digital output by USB (UART) and built-in fan. It is a powerful sensor, fast (response less than 10s), accurate and reliable.

The Carbon Monoxide sensor is a low-power digital gas sensor which has a CCS811 sensor and an 8-bit microcontroller, contains an analog-digital converter so that it can detect indoor air quality which can detect monoxide carbon (CO) and a wide range of volatile organic compounds (VOCs). It is a sensor designed to monitor air quality inside personal devices such as mobile devices and smart watches, with low power consumption that can be used with battery

MG-5 Gas Methane Sensor Module for Arduino features:
- Main chip: MQ-5 natural gas sensor and comparator LM393
- Working voltage: 5V
- Current: 150mA
- Digital output: TTL 0/1
- Analog output: analog voltage sensing value
- Quick response features:
- Detection concentration:
- 200ppm - 10000ppm LPG, LNG, natural gas, propane,
- Adjustable sensitivity with the potentiometer
- Size: 32mm x 20mmx 18mm