Gas Sensor Module Sensitive for Methane, Butane, LPG, smoke.This sensor is sensitive for flamable and combustible gasses.
Gas sensor MQ-3
Carbon DioxideSensor module MQ-7
This sensor builds on the photoacoustic sensing principle. Sensor board is equipped with an I2C interface.
The Sensirion SCD40 sensor determines the level of carbon dioxide according to the newly developed photoacoustic technology.The board with the sensor is adapted for connection to the I2C interface and has resistors and jumpers to enable the pull-up of the bus to 3.3V