MQ-5 Methane LPG Liquid Propane Gas Sensor Module

The MQ-9 Gas Sensor Module is an environmental sensor designed to detect the presence of combustible gases with a fast response time. It is built onto a breakout board for easily integrating the sensor into a circuit, with an operating voltage of 5V that is convenient for standard light-weight Electronics projects. The sensor uses the conductivity of the material S_nO₂ (Tin Oxide) within the netted dome to identify whether CO and combustible gases are present, with various levels of conductivity being translated to corresponding levels of gas saturation in the surrounding air.

Although this sensor module is relatively inexpensive, it offers an extremely fast response time and highly sensitive detection ratings, capable of identifying CO at 10 per 1000 parts per million (ppm) and combustible gases at 100 per 10,000ppm. The sensor unit is housed within a Bakelite encapsulation with a blended plastic and stainless steel net over the top, which prevents direct contact with liquids while allowing for gases to flow freely over the S_nO₂. These features, in conjunction with the long lifespan of materials used to build the Gas Sensor, make it an excellent investment for anyone who might be concerned with the saturation levels of dangerous gases within a home, workplace or even factory environment.

Typical Applications for the MQ-9 Gas Sensor Module:

The MQ-9 Gas Sensor Module is a valuable investment if you need to be able to sense the levels of CO and combustible gases in an environment, as it provides an early warning for dangerously high saturation levels. It is designed to detect dangerous levels within a minute and half at most, and can be connected to almost any circuit – allowing it to be used for safety automation or as a visual or audible alarm.

The module has also been designed in Breakout Board style, with easy pins to simply connect to with a control board like an Arduino. So whether you want to connect this sensor up to an audible alarm, an automated reaction system or even to the internet in order to alert you via mobile or internet messaging services, this MQ-9 Gas Sensor Module is a good quality yet inexpensive solution.

Connections

VCC ↔ 2.5V ~ 5.0V
GND ↔ ground
Aout ↔ MCU.IO (analog output)
Dout ↔ MCU.IO (digital output) 

Note: Buzzer is not included in this package, you have to buy it separately.

To explore more Gas sensors Click on the link, Gas Sensor

Features :

1. High sensitivity to LPG, natural gas, town gas.
2. Small sensitivity to alcohol, smoke.
3. Stable and long life.
4. Simple drive circuit.
5. Fast response. 

Package Includes :

1 x MQ-5 Methane LPG Liquid Propane Gas Sensor Module