These are standard MQ-5 gas sensors which are sensitive to LPG, LNG, natural gas, iso-butane etc. They can be directly connected to ADCs for ease-of-use.
These sensors can be used to make your own alcohol breathalyzer. MQ303A sensors are highly sensitive to alcohol and provides a fast response.
These are standard MQ-2 gas sensors which are sensitive to smoke among other gases. They can be directly connected to ADCs for ease-of-use.
Water flow sensor, a water rotor, and a hall-effect sensor, best one for water flow sensing.
Grove - CO2 Sensor measures the level of carbon dioxide present in the atmosphere.
Grove-Gas Sensor(MQ5) has a fast response time to detect any gas leakage.
The Grove - Gas Sensor(MQ2) module is useful for gas leakage detecting(in home and industry).
Semiconductor sensor for alcohol detection, good sensitivity and fast response to alcohol
Sensor is to create Digital (Lo Pulse) output to Particulate Matters (PM).
Grove - Gas Sensor(O2) is used to check the amount of oxygen present in the gases.
The Grove - HCHO Sensor is a semiconductor VOC gas sensor. Its design is based on WSP2110 whose conductivity changes with the concentration of VOC gas in air.
The sensor is designed for indoor air quality testing.