Uno R3 SMD Atmega328P Board with Cable +1 Channel 5V Relay Module Without Optocoupler + Flammable Gas and Smoke Sensor Module (MQ2)

About this item:-

• The MQ2 gas detecting sensor module is gas detecting sensor module that features fast response and high sensitivity.
• This module uses MQ2 Smoke & Flammable gas sensor as a gas sensing element. I
• UNO is a micro controller board based on the ATmega328P.
• UNO R3 new improvement, the printing on the female connector is clearer, more precise, more convenient to use wires.
• Using this module you can easily interface MQ2 Smoke & Combustible gas Sensor to any Microcontroller. Since this Gas Sensor module is sensitive to smoke it can be used in for fire detection. MQ2 Gas Sensor is also sensitive to flammable/combustible gasses like LPG, Propane & Hydrogen.