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We've had makeover! Tether Airborne Index was previously known as COVIDCare

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Airborne Index for Aged Care

Tether’s CO2 monitoring solution to managing airborne virus transmission risk in aged care facilities. (airborne virus includes COVID, flu, pertussis (whooping cough) and RSV - respiratory syncytial virus.) 

How do we make sure our staff and residents feel safe and secure? By showing them


As seen in:

Airborne viruses (like the flu and Covid-19) can be spread by breathing in air exhaled by another person.  High CO2 levels in the environment means a higher % of the air you breathe is shared with other people which leads to a higher exposure risk.


Airborne viruses are spread in tiny, invisible droplets called aerosols that are expelled when infected people exhale


The more people in a closed space, the greater the risk of infection


Making sure spaces are well-ventilated is key to reducing the spread of the virus


CO2 monitors show which areas need better ventilation 

"If you are sharing air, the lower the CO2, the lower risk of infection.”

​Jose L. Jimenez. Exhaled CO2 as a COVID-19 Infection Risk Proxy for Different Indoor Environments and Activities. Environmental Science & Technology Letters, 2021


How it works


Scan to activate and stick the monitoring device to the wall of your premises


Your device will scan the air in real-time, tracking the CO2 levels in the space


You will be alerted well ahead of time if CO2 is rising, allowing you to increase ventilation and reduce the transmission risk


Your customers feel safe and happy knowing and being able to see in real-time they are at a low risk

Show you care

Reduce the anxiety of communal living and welcoming visitors. 

Tether’s Airborne Index CO2 monitors offer live data, allowing everyone to make educated, safe choices.

“Research confirms value of measuring carbon dioxide to estimate infection risk” Read more

A smart layer of added protection

After vaccination, CO2 monitoring is fast becoming the global standard for managing airborne virus transmission risk in enclosed spaces. 

Airborne Index allows you to manage that risk smartly: software integration delivers data that makes tracking and preempting infection even easier, allowing you to be proactive in your risk response. 

Weight Lifting

Knowledge is power

Data is recorded and stored to be able to track trends and preempt disruption. 

Keeping CO2 levels down mitigates the risk of seasonal illness.  

We may not be able to control airborne viruses, but we can go a long way to preventing their spread. 

Power - at your fingertips

Install in seconds

Order the monitor, install the app. 

  • DIY or we can get you set up

  • No wifi is required

  • Mains - powered or 1 year battery life 

Family Portrait

Get a Quote

Do you have CO2 devices already installed?
Do you need us to install them for you?

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COVID Care Quote
  • How many sensors do I need?
    The typical minimum installation within a home would be: 1 x EnviroQ in the room you would like to monitor. 1 x ThermalQ installed outside to compare with Indoor environmental quality. 1 x HotDrop on the main incoming power. The typical recommened installation within a home would be: 1 x EnviroQ in every BEDROOM and one in the largest common living area 1 x ThermalQ installed outside to compare with indoor environmental quality 1 x HotDrop on the main incoming power
  • Why is it recommended to have more than one EnviroQ / ThermalQ in my building?
    The EnviroQ is only able to monitor the Indoor Environmental Quality of a space where the air and environmental conditions can distrubute evenly. As soon as a space can be closed off with doors or windows then that space will create its own micro-climate over time and a seperate EnviroQ or ThermalQ is required.
  • How do I get pricing?
    We do not advertise pricing. Tether is priced based on volume and contract terms. To get a quote please email with your request or click HERE.
  • Can Tether devices connect to WiFi?
    No, Tether devices connect via the SigFox and LoRAWAN networks. We have done this so that Tether devices will have no reliance on dedicated internet connections within the buildings they are installed. This also makes our devices incredibly secure.
  • How do I install Tether devices?
    Tether devices are installed, replaced and removed through the Tether management application which can be downloaded from the Apple App store or Google play store
  • How do I get the Healthy Homes Compliance feature?
    The healthy homes compliance check is available through the Tether management app when enabled for your account. If you are interested in running Healthy Home Compliance checks then please let us know by emailing us on or click HERE.

“People infected with coronavirus can spread it around a room in tiny airborne droplets called "aerosols" when they breathe out, speak, shout or sing.

These aerosols build up indoors, especially when a place is crowded or there is poor ventilation, and the longer you are surrounded by them, the more chance you have of breathing them in.

Unfortunately, the aerosols are so small you can't see them, which is where the CO2 meters come in.


In addition to aerosols, we also breathe out CO2 — a byproduct of respiration — which builds up in the air unless a space is ventilated.

And this CO2 is easier to measure than the aerosols or virus particles themselves.

So the level of CO2 in a space can be used as proxy for the possible risk of exposure to coronavirus.”

Anna Salleh; ABC Health & Wellbeing


Tether Airborne Index for Businesses & Schools

Learn how Airborne Index helps businesses & schools

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