MQ-9 Gas Sensor Module for Carbon Monoxide, Methane and LPG Audio Amplifier True Read-While-Write Operation

True Read-While-Write Operation

ATmega328P Microcontroller is the most widely used standalone Atmega IC for electronics projects

Speed Variation Ratio ： 1/64

Friction torque: 600-1200 gf

MQ-9 Gas Sensor Module for Carbon Monoxide, Methane and LPG Audio Amplifier True Read-While-Write OperationMQ9 Gas Sensor is a Metal Oxide Semiconductor (MOS) type Gas Sensor of MQ Gas Sensors family involving MQ 2, MQ 4, MQ 3, MQ 135, etc. It is mainly used to detect gases like Carbon Monoxide, Methane, and Propane, etc. This MQ9 Smoke Sensor contains a sensing element, mainly aluminum oxide based ceramic, coated with Tin dioxide (SnO2), enclosed in a stainless steel mesh. Whenever gas comes into contact with the sensing element, the resistivity of the