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MQ-9 CO, Methane & LPG Gas Sensor Module

4.25 ratings
632+ bought in past month
AI Summary
Gas Sensors for everyday users

The MQ-9 CO, Methane & LPG Gas Sensor Module is a value-for-money gas sensors designed for everyday users. It features Item Type: Gas Sensor and Operating Voltage (V): 5. 80% of buyers rate it 4★ or above.

₹613
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Total: ₹613
Buying tip: A smart budget buy — solid performance without breaking the bank.
Estimated delivery: 17 Aug31 Aug
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Quick Specs

Item Type: Gas Sensor
Operating Voltage (V): 5
Model No. / Name: MQ-9
Current consumption: 150
Additional Specs.: Do output: TTL digital 0 and 1 (0.1 and 5V), Ao output: 0.1-0.3V (relatively clean)
Length (mm): 32

Ideal For

Electronics projectsArduino / Raspberry Pi buildsPrototyping
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SKU: robu-43970Category: Gas Sensors

About This Product

The MQ-9 CO, Methane & LPG Gas Sensor Module is a value-for-money gas sensors designed for everyday users. It delivers reliable performance at an accessible price.

Key Specifications

  • Item Type: Gas Sensor
  • Operating Voltage (V): 5 — works with standard household power
  • Model No. / Name: MQ-9
  • Current consumption: 150
  • Additional Specs.: Do output: TTL digital 0 and 1 (0.1 and 5V), Ao output: 0.1-0.3V (relatively clean)
  • Length (mm): 32
  • Width (mm): 20
  • Weight (g): 5

Customer Verdict

80% of buyers rated this product 4 stars or above.

Why Buy from Pricio?

Pricio sources this product directly, cutting out multiple middlemen. Every order includes free shipping, a 15-day return policy, and secure payment via Razorpay.

This is MQ-9 Carbon Monoxide, Methane, and LPG Gas Sensor Module can be used to sense Carbon Monoxide and Methane Gas. Sensitive material of the MQ9 gas sensor is SnO2, which with lower conductivity in clean air. It makes detection by the method of cycle high and low temperature, and detect CO when the low temperature (heated by 1.5V). The sensor’s conductivity is higher along with the gas concentration rising. When a high temperature (heated by 5.0V), it detects Methane, Propane, etc. combustible gas and cleans the other gases adsorbed under low temperature.
Wire Connections

VCC - Positive pole (5V) GND - Negative pole DO - TTL switch signal output AO - Analog signal output

Applications
  1. The domestic gas leakage detector
  2. Industrial gas detector
  3. Portable gas detector
Note : Actual product may differ in terms of color.

Features :

  1. Good sensitivity to CO/Combustible Gas
  2. High sensitivity to Methane, Propane, and CO
  3. Long life and low cost
  4. Simple drive circuit

Package Includes :

1 x MQ9 Carbon Monoxide, Methane, and LPG Gas Sensor Module

Setup Guide

1
Identify the pins
Locate VCC (power), GND (ground), and data pins (SDA/SCL for I2C, MOSI/MISO for SPI, or TX/RX for UART). Refer to the pinout diagram on the product page.
2
Wire to your microcontroller
Connect VCC to 3.3V or 5V (check the module spec), GND to GND, and data pins to the appropriate GPIO pins on your Arduino or Raspberry Pi.
3
Install libraries
In Arduino IDE, go to Sketch → Include Library → Manage Libraries and search for the sensor library. Install the recommended version.
4
Upload example sketch
Open File → Examples → [library name] → Basic Example. Upload to your board and open Serial Monitor to view output.
5
Calibrate if needed
Some sensors (temperature, humidity, distance) may need a short warm-up period or calibration. Run the calibration sketch if provided.