Home

Explore

View Cart

Deals

Saved

Suggested searches

Plant-based protein powders
Vegan leather handbags
Bedroom decor
Waterproof jackets
Hoodies

Learn more about how we use your data to personalize your experience and ads. Recommendations are for informational purposes only.

PW

PMD Way

MG811 Carbon Dioxide CO2 Sensor from PMD Way with free delivery worldwide

MG811 Carbon Dioxide CO2 Sensor from PMD Way with free delivery worldwide

PMD Way

MG811 Carbon Dioxide CO2 Sensor

4.5 (1,234)

Sold 100+ last 30 days

20% off first order

$54.54

Color

Black

Quantity

Product description loading

Product description loading

This is the product description text that will appear here.

Shop is the next step on our mission to make commerce better for everyone.

Start selling

For brands

For creators

Build your store

Information

Shop Pay

Help center

Social

X (Twitter)

Instagram

Legal

Terms of Service

Privacy Policy

Your Privacy Choices

Powered by

|

Start selling for free

Language

© Shopify Inc. 2026

Quantity

1

Easily measure carbon dioxide (CO2) levels with this Arduino-compatible sensor from PMD Way. Based on the MG811 sensor, the output voltage is inversely proportional to the amount of CO2 in the area.
You can use this sensor with any microcon...

Delivery & Returns

PMD Way

PMD Way

4.4 (47)

More from PMD Way

Wired Enclosed AM2320 I2C Bus Digital Temperature and Humidity Sensor from PMD Way with free delivery worldwide

Wired Enclosed AM2320 I2C Bus Digital Temperature and Humidity Sensor

Detect the presence of Carbon Dioxide in the air with the MHZ19 Infrared CO2 Sensor Module for Arduino, Raspberry Pi and more from PMD Way with free delivery worldwide

MHZ19 Carbon Dioxide CO2 Sensor Module

Waterproof Ultrasonic Proximity Sensor JSN-SR04T from PMD Way with free delivery worldwide

Waterproof Ultrasonic Proximity Sensor JSN-SR04T

Ultrasonic Distance Sensor Module HC-SR04 2~450 cm - Ten Pack from PMD Way with free delivery worldwide

Ultrasonic Distance Sensor Module HC-SR04 2~450 cm - Ten Pack

Light Sensor for LilyPad in packs of ten from PMD Way with free delivery worldwide

Light Sensor for LilyPad - Ten Pack

Mercury Tilt Switches in packs of 100 from PMD Way with free delivery worldwide

Tilt Switch - 3mm or 5mm - 100 Pack

1mm 0.5mm Double Sided FPC FFC Breakout PCB from PMD Way with free delivery worldwide

1mm 0.5mm Double Sided FPC FFC Breakout PCB - Various Widths

Huge 100mm Illuminated Flat Arcade Buttons in five colors from PMD Way with free delivery worldwide

Huge 100mm Illuminated Flat Arcade Button

K-Type Thermocouple with 12mm Washer from PMD Way with free delivery worldwide

Automotive Thermocouple with Washer

Useful single channel bistable latching relay modules from PMD Way with free delivery worldwide

Single Channel Latching Relay Module

10kg Load Cell and HX711 Load Cell Amplifier from PMD Way with free delivery worldwide

10kg Load Cell and HX711 Load Cell Amplifier

Optoisolated Relay Modules - Various Configurations

Related to PMD Way

RobotShop USA

4.7

(350)

Litter-Robot 3 Open Air Cat Sensor

Litter-Robot 3 Open Air Cat Sensor

(40)

Litter-Robot 3 Open Air Anti-Pinch Pins (2pk)

Litter-Robot 3 Open Air Anti-Pinch Pins (2pk)

(13)

Litter-Robot 3 Open Air DFI Hardware (v2)

Litter-Robot 3 Open Air DFI Hardware (v2)

(21)

50 Kg Micro Load Cell

50 Kg Micro Load Cell

Nexus 38mm Plastic Omni Wheel

Nexus 38mm Plastic Omni Wheel

(1)

Replacement 0.1uF Capacitor for Snap Circuits

Replacement 0.1uF Capacitor for Snap Circuits

(3)

3mm Brass Hex Coupling For 38MM Plastic Omni Wheel

3mm Brass Hex Coupling For 38MM Plastic Omni Wheel

6V, 26RPM, 188 oz-in 360:1 Spur Gear Motor - Gold Spark

6V, 26RPM, 188 oz-in 360:1 Spur Gear Motor - Gold Spark

ESP32 UWB (Ultra Wideband) w/ WROOM Core

ESP32 UWB (Ultra Wideband) w/ WROOM Core

Seeedstudio XIAO ESP32C3 - Tiny MCU w/ Wi-Fi & BLE

Seeedstudio XIAO ESP32C3 - Tiny MCU w/ Wi-Fi & BLE

Cytron 13A DC Motor Driver - GROVE Compatible

Cytron 13A DC Motor Driver - GROVE Compatible

Clearpath Robotics TurtleBot 4 Mobile Robot

Clearpath Robotics TurtleBot 4 Mobile Robot

Vilros.com

4.7

(1.2K)

Raspberry Pi 5

(132)

Raspberry Pi Pico 2

(13)

Raspberry Pi 4 Model B

(68)

Raspberry Pi 3 Model B+

Raspberry Pi 3 Model B+ (Plus)

(30)

Vilros Raspberry Pi 4 Basic Starter Kit - Vilros.com

Vilros Raspberry Pi 4 Basic Starter Kit

(82)

Official Raspberry Pi 4 Power Supply-(US),UL

(13)

Vilros Micro-HDMI To Standard HDMI Cable - Designed For Raspberry Pi 4/5

(3)

Raspberry Pi Zero W

Raspberry Pi Zero W

(33)

Vilros Raspberry Pi 4 Complete Starter Kit

(51)

Raspberry Pi 27W USB-C Power Supply For Raspberry Pi 5

(17)

10% off

Vilros Raspberry Pi 5 Complete Starter Kit

(47)

Vilros 27W -5V/5A Raspberry Pi 5 Compatible USB-C Power Supply

(16)

OpenELAB Technology Ltd.

4.8

(26)

M5StickS3 ESP32S3 Mini IoT Dev Kit

(3)

M5Stack Cardputer-Adv with StampS3A ESP32-S3FN8 Mechanical Keyboard-1

7% off

M5Stack Cardputer-Adv with StampS3A ESP32-S3FN8 Mechanical Keyboard

(16)

€32.55€34.95

Banana Pi BPI-M2 Zero

Xiaomi CyberGear Micro Motor Connection Cable XT30 (2+2)-F Female Connector Aimes Plug

5% off

M5Stack Cap LoRa 1262 for Cardputer Adv (SX1262, ATGM336H)

(5)

€17.95€18.95

HELTEC WiFi LoRa 32 V4 SX1262 LoRa Node Meshtastic LoRaWAN-1

3% off

HELTEC WiFi LoRa 32 V4.3.1 SX1262 LoRa Node Meshtastic LoRaWAN GPS

€29.95€30.95

13% off

Seeed Studio XIAO ESP32S3 & Wio-SX1262 Kit for Meshtastic

€13.95€15.95

M5Stack ATOM Voice Smart Speaker Development Kit white background front image

M5Stack ATOM Voice Smart Speaker Development Kit

(1)

Seeed Studio XIAO nRF52840 & Wio-SX1262 Kit for Meshtastic-4

18% off

Seeed Studio XIAO nRF52840 & Wio-SX1262 Kit for Meshtastic

(1)

€16.95€20.65

4% off

M5Stack Atom VoiceS3R Smart Speaker Dev Kit

€14.35€14.95

Seeed Studio Wio Tracker L1 Pro white background front view

2% off

Seeed Studio Wio Tracker L1 Pro – Meshtastic LoRa GPS Node

€48.85€49.95

M5Stack RFID 2 Unit (WS1850S) - OpenELAB

M5Stack RFID 2 Unit (WS1850S)

(4)

D

3D Printing Canada

4.7

(3.8K)

Black - Budget PLA Filament - 1.75mm, 1kg 3D Printing Canada

20% off

Black - Budget PLA Filament (With Spool) - 1.75mm, 1kg

(67)

CA$15.99CA$19.99

White - Budget PLA Filament - 1.75mm, 1kg 3D Printing Canada

20% off

White - Budget PLA Filament (With Spool) - 1.75mm, 1kg

(41)

CA$15.99CA$19.99

31% off

Black - Standard PETG Filament - 1.75mm, 1kg

(71)

CA$17.99CA$25.99

Grey - Budget PLA Filament - 1.75mm, 1kg 3D Printing Canada

20% off

Grey - Budget PLA Filament (With Spool) - 1.75mm, 1kg

(31)

CA$15.99CA$19.99

Red - Budget PLA Filament - 1.75mm, 1kg 3D Printing Canada

20% off

Red - Budget PLA Filament (With Spool) - 1.75mm, 1kg

(20)

CA$15.99CA$19.99

R3D Bambu Compatible Reusable Master Spool R3D

33% off

R3D Bambu Compatible Reusable Master Spool

(7)

CA$9.99CA$14.99

Dark Blue - Budget PLA Filament - 1.75mm, 1kg 3D Printing Canada

20% off

Dark Blue - Budget PLA Filament (With Spool) - 1.75mm, 1kg

(25)

CA$15.99CA$19.99

Black - Standard PETG Filament (Refill) - 1.75mm, 1kg 3D Printing Canada

22% off

Black - Standard PETG Filament (Refill) - 1.75mm, 1kg

(2)

CA$17.99CA$22.99

Yellow - Budget PLA Filament - 1.75mm, 1kg 3D Printing Canada

20% off

Yellow - Budget PLA Filament (With Spool) - 1.75mm, 1kg

(22)

CA$15.99CA$19.99

Coffee - Budget PLA Filament - 1.75mm, 1kg 3D Printing Canada

20% off

Coffee - Budget PLA Filament (With Spool) - 1.75mm, 1kg

(16)

CA$15.99CA$19.99

Black - Unveil Form Refill PLA - 1.75mm, 1kg Unveil Form

48% off

Black - Unveil Form Refill PLA - 1.75mm, 1kg

(6)

CA$12.99CA$24.99

Latte - Budget PLA Filament - 1.75mm, 1kg 3D Printing Canada

20% off

Latte - Budget PLA Filament (With Spool) - 1.75mm, 1kg

(20)

CA$15.99CA$19.99

Discover top brands

Exclusive offer available

The GLD Shop

4.7 (167.3K)

Little Sleepies

Exclusive offer available

Little Sleepies

4.9 (399.2K)

Mandala Scrubs

Exclusive offer available

Mandala Scrubs

4.6 (11.1K)

Aviator Nation

Exclusive offer available

Aviator Nation

4.5 (89.4K)

Culture Kings US

Culture Kings US

Culture Kings US

4.7 (146.1K)

Fashion Nova

4.3 (428.9K)

Revice

4.5 (8.5K)

OOFOS

Exclusive offer available

OOFOS

4.5 (178.5K)

Rockstar Original

Rockstar Original

Rockstar Original

4.6 (180.8K)

32 Degrees

4.7 (227.9K)