Best-in-class 3-in-1 integrated CO2 sensor


Air Quality CO2

Helium Sensors

MerryIoT Hub is required to get the sensors connected.

  • Integrated 3-in-1 CO2 sensor (CO2 / Temperature / Humidity)
  • Real-time downlink support
  • Non-contact air quality indication by LED colors
  • No monthly fee app for both iOS and Android
  • Coverage test button for easy installation

MerryIoT Air Quality CO2


Indoor air quality is sometimes worse than the air quality outdoors, however, we now stay indoors more than ever before!

Monitor the level of carbon dioxide, temperature, as well as humidity 24/7 in real-time!

LED shows you the air quality right after a wave in front of the device.

You can now define your own comfortable environment using an easily managing app and the MerryloT Air Quality CO2 monitor!


Download The App

Google Play: Download Link

Apple App Store: Download Link

JS Decoder Github Link:
MerryIoT decoder for TTN:

Sensor Type : NDIR (Non-dispersive infrared)

Global Use : Multiple SKUs for global use

Protocol : LoRaWAN

Operating Environment

Indoor use only

0° to 50°C (32° to 122°F) only; 0% to 100 %RH


Battery: 3.6V AA Li-SOCI2 x 2 pcs (included)

Expected Battery Lifetime : up to 2 years

*Note: Battery life is mainly determined by the reporting frequency. Other factors include moisture and high temperature.


Dimensions : 70x25x70mm (2.75x0.98x2.75in)

Weight : 120g (4.23oz)

Warranty: One-Year limited warranty