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MG811 CO2 Carbon Dioxide Gas Sensor Module

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Gas Sensors for everyday users

The MG811 CO2 Carbon Dioxide Gas Sensor Module is a mid-range gas sensors designed for everyday users. It features Item Type: CO2 Sensor and Model No. / Name: MG811.

₹2,739
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Total: ₹2,739
Buying tip: A quality investment for dependable performance and premium build quality.
Estimated delivery: 24 Aug7 Sept
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Quick Specs

Item Type: CO2 Sensor
Model No. / Name: MG811
Operating Voltage (V): 6
Length (mm): 32
Width (mm): 22
Weight (g): 10

Ideal For

Electronics projectsArduino / Raspberry Pi buildsPrototyping
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SKU: robu-348038Category: Gas Sensors

About This Product

The MG811 CO2 Carbon Dioxide Gas Sensor Module is a mid-range gas sensors designed for everyday users. It delivers reliable performance at an accessible price.

Key Specifications

  • Item Type: CO2 Sensor
  • Model No. / Name: MG811
  • Operating Voltage (V): 6 — works with standard household power
  • Length (mm): 32
  • Width (mm): 22
  • Weight (g): 10
  • Shipping Weight: 0.015 kg
  • Shipping Dimensions: 4 × 3 × 4 cm

Why Buy from Elecvora?

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

If you want to make a project with carbon dioxide sensors also need a good range sensing property on this sensor then this module is good for you. This sensor measures gaseous carbon dioxide levels by monitoring the amount of infrared (IR) radiation absorbed by carbon dioxide molecules. This type of sensor is used in monitoring indoor air quality, landfills, process control, and controlled environment horticulture.

MG-811 Carbon Dioxide Sensor Module (Carbon dioxide sensor) is a carbon dioxide sensor (CO2) sensor that is a Metal Oxide Sensor sensor, which must heat the tank to the specified level. (With the method of supplying power) will cause heat vapor and separate CO2 from the air.  This sensor module has an MG-811 onboard as the sensor component. A signal output circuit for heating the sensor The MG-811 is highly sensitive to CO2 and less sensitive to alcohol and CO. The output voltage of the CO2 increases.

Useful for greenhouses and medical projects.  Sends an analog signal that decreases as the concentration of CO2 increases. This module also includes a digital output pin with TTL output. The Potentiometer on board is used to set the Digital Output Setpoint. After setting the potentiometer threshold, once that threshold is reached, an LED on the sensor will illuminate and the digital pin will give a HIGH voltage signal.

Pinout:

  1. VCC: 6V ( You can use a 4 AA battery holder for this ).
  2. AOUT: Analog Output (voltage decreases as CO2 Levels increase).
  3. DOUT: Digital Output that goes HIGH when the threshold is reached (set the threshold by turning the onboard potentiometer).
  4. GND: 0V.

Connection Diagram with Arduino and LCD Display:

MG811 Module, Air Carbon Dioxide/CO2 Sensor To Explore more Gas Sensors, Click here

Features:

  1. Wide detecting scope.
  2. High sensitivity & stability.
  3. Simple drive circuit.
  4. Digital output: Active low (When it outputs a low-level signal, the indicator LED will be on)
  5. Analog output: Two Range Options: 0 to 2V or 0V to 4V. The default is 0V to 2V DC
  6. Compatible with Arduino & Raspberry Pi (for use on analog output with Raspberry Pi you will need an Analog to Digital Converter Chip).

Package Includes:

1 x MG811 Module, Air Carbon Dioxide/CO2 Sensor.

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.