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Aranet4 PRO Sensor & Free Anti Theft Wall Bracket

The Aranet4 PRO is here. A wireless AA battery operated CO2 monitor. App enabled, custom reporting, traffic light system with low power e-ink display.

Want to know the Aranet4 HOME & PRO features and differences?

Includes FREE Anti Theft Wall Bracket with every Aranet! (Not included as standard by other companies)


Original price was: £225.00.Current price is: £139.00.

Original price was: £225.00.Current price is: £139.00.

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The Aranet4 PRO sensor is a battery powered, wireless device. Finally a CO2 monitor that is simple to install. The traffic light system lets you know when CO2 levels have become unhealthy. Google play and Apple Store Apps allow the user to set up and use the product within minutes. You can alter settings to suit your needs using the App.

We love the Aranet4 CO2 monitor. Firstly, this all in one CO2, temperature, RH and atmospheric pressure sensor solution! In addition the portable sensor can be with you in the car, out and about as well as in your home or place of work. The clear display makes air quality easily visible at a glance so you can reactively improve the air quality when required while also monitoring the history via the App.

To stop thieves, the Aranet4 HOME has an anti-theft wall mount (sold separately). The wall mount uses a Security screw that needs a screwdriver with a Torx T15 insert bit to remove it.

The Aranet4 PRO sensor is compatible with Aranet Cloud. This service is an industrial grade solution for IoT ecosystems & remote management. Personalise your data with custom dashboards, graphs and user management. Learn more

If you do not require the Cloud solution and only need Bluetooth version please see the Aranet4 HOME for Lowest UK price of £149 plus free Anti Theft Brackets. Not sure if you need HOME or PRO? Check out the differences here

If Cloud network solution is not required please see the Aranet4 HOME sensor with Free Bracket

Finally, Check out our other battery powered CO2 monitors. For example the ExploraCO2 or the Senseair Aercast.


Product Details

  • CO₂, temperature, relative humidity, atmospheric pressure monitoring
  • NDIR CO₂ sensor
  • Energy-efficient e-ink display
  • Smartphone app - Google Play & Apple App Store
  • Up to 2-year battery life (2xAA)
  • Access to the Aranet business ecosystem (Aranet PRO, Aranet Cloud, SensorHUB) – only available with Aranet4 PRO


Onsite Diagnostics

If you require onsite diagnostics or technical assistance with any of our products please contact us

  • This field is for validation purposes and should be left unchanged.


We recommend Duomo Gas Detection products are serviced at least annually to ensure efficacy and extend sensor life. Our qualified team of engineers are available Nationwide.



  • Aranet4 PRO User Guide

    7.45 MB | pdf

  • Aranet4 HOME & PRO difference

    423.72 KB | pdf



How long does the Aranet4 last?

The Aranet4 NDIR sensor can last up to 15 years. The batteries can last up to almost 4 years (dependant on settings).

What is the product guarantee on the Aranet4?

The Aranet4 has a one year manufacturer guarantee as standard.

Are these the newest Aranet4 monitors?

There have been several revisions to the Aranet4 design.

As an official Aranet4 distributor Duomo (UK) can guarantee that the Aranet4 monitor sold are the most latest versions.


Support & Service

If you require technical assistance or an annual service on this product please contact us and we will be happy to help. Our qualified team of engineers are available Nationwide.

Duomo (UK) Ltd

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