This little MQ-2 Methane Gas Sensor module detects a wide range of potentially dangerous gases, with onboard potentiometer for adjusting sensitivity.
This is a simple-to-use liquefied petroleum gas (LPG)sensor module, suitable for sensing LPG (composed of mostly propane and butane) concentrations in the air. The MQ-6 can detect gas concentrations anywhere from 200 to 10000ppm.
The MQ-5 Gas Sensor module is useful for gas leakage detection (in home and industry). It is suitable for detecting H2, LPG, CH4, CO, Alcohol. Due to its high sensitivity and fast response time, measurements can be taken as soon as possible.
The MQ-7 Gas Sensor Module measures the levels of Carbon Monoxide, for home, industrial, laboratory and medical safety applications.
The MQ-4 Gas Sensor Module is capable of detecting Methane & Natural Gas with a precision of between 200 and 10,000 parts per million.
Take charge of your air quality with the Analog Infrared CO2 Sensor, offering NDIR technology for extreme-precision CO2 concentration control.
This MG811 Analog Carbon Dioxide Sensor offers 350 to 10,000ppm sensitivity, to help you maintain a healthy, breathable living environment.
This handy HCHO Formaldehyde Sensor Module is built for hobbyists, but offers high sensitivity, a long lifespan and easy integration for Arduino.