Corentium Home 2

The box contains 1 Corentium Home 2, 2 AA alkaline batteries (already installed), Quick Start Guide, Regulatory information guide, and a silica bag.

Learn about your device and how to use the information and features it offers.

If you choose to use your Corentium Home 2 radon detector without the Airthings app, just do Step 1 and Step 4 and you’re on your way. You’ll be able to connect to the app at any point in the future - you’ll only need to press the device’s Bluetooth button when you are ready to connect with the app.

Step 1 - Activate the detector

Step 2 - Get the Airthings app and create your account

Download the Airthings app to your smartphone or tablet. It takes just a minute to create your Airthings account. If you already have an account, you're good to go.

Step 3 - Add the detector to your Airthings account

Follow the in-app instructions to add the detector to your account. Make sure Bluetooth is enabled on your smartphone!

Step 4 - (For Europe and Canada only) Change the units

This step is only necessary if you plan to use your detector without the Airthings app. Otherwise, your region’s customary units are applied automatically when you add it to your Airthings app account.

By default, the detector displays values in pCi/L for radon and °F for temperature, units customary in the United States.  To change the radon and temperature units to Bq/m³ and °C, use the Units button inside the battery case.

Radon is usually measured in basements or the lowest level of the home because that is where radon finds its way indoors. That said, you can measure radon in any of your home’s living areas where people spend time. Wherever you place it in your home, follow these guidelines:

• Never use it outdoors or in environments with more than 85% humidity.
• Place it at approximate breathing height for the room and near where people tend to be.
• Place it at least 3 ft (90 cm) from the nearest door, window or air vent.
• Do not expose it to direct sunlight or moisture.
• Avoid moving it during measurement.

Current temperature and humidity values are measured every 5 minutes. For radon, the detector samples the air and produces a measurement hourly. Over time it calculates and displays views on the screen that show the 24H, 7D, 30D rolling averages.

The cumulative view provides an all-time average and tells you how long it’s been since you began the measurement. When it reaches 365 days, it turns into your rolling 1 year average.

Day 1. The detector offers current temperature and humidity readings within just a couple of minutes, the first radon average appears in 24 hours. Why is that?

After 24 hours. The 24H radon average view becomes available. This is a rolling (or moving) average and is updated hourly. In addition, the first cumulative view displays the average the count of hours since measurement started and offers you an all-time average.

 

After 48 hours. The cumulative average view starts reporting in days instead of hours. It updates with new data hourly.

 

From day 7 to day 29. A new 7D radon average view becomes available and is updated hourly with new data. The cumulative view continues to show an all-time, long-term average and updated hourly.

 

From day 30.  A 30 day rolling average appears on day 30 and will be updated once daily going forward. The cumulative average now begins to update just once daily (no longer hourly) and continues to keep a handy count of days since the measurement started.

After 365 days. The cumulative average turns into a 1 year rolling average updating once daily.

Connecting to the Airthings app

Corentium Home 2 is designed to work on its own or paired with the app. Either way you can expect reliable, long-term measuring of radon in your home. However, with the Airthings app you gain access to easy to use graphs that help you understand radon trends in your home and measure the impact of mitigation measures. Through the app, we help you to understand what your numbers mean and if and when you should consider contacting a radon professional for help.

▶ Here’s how to do it

1. Download the Airthings app from your app store and create an account.
2. Activate the Bluetooth signal from the detector.
   

    

• Initial setup: When you pull the battery tab after unboxing your Corentium Home 2, the detector emits a Bluetooth signal for 60 minutes.
• At any other time: Press the Bluetooth button inside the detector’s back cover. This activates a signal for 5 minutes and displays a blinking Bluetooth icon on the display. Once connected, the icon stops blinking.

Connecting to an Airthings hub using SmartLink

If you have an Airthings Hub or a View series monitor, like View Plus, you can connect your Corentium Home 2 with it to enable anytime anywhere access to your detector’s readings.

▶ Here’s how to do it

When you first add your Corentium Home 2 to your Airthings app account, you are prompted in the app to switch to SmartLink. Choose this and follow the instructions in the app. That’s it!

If you are already connected to the app via Bluetooth, then you need to open the device Settings and tap Connectivity. Choose Switch to SmartLink,  then follow the in-app instructions. When it’s connected, the SmartLink icon will appear on the device display.

Click Generate report. You are presented with a link for downloading the PDF to your device. Here's an example of what it looks like.

The radon levels reported on your device are all rolling averages. But how should you react to them? What are they really telling you?

Risk is best evaluated using the long-term average level

Because radon levels can fluctuate significantly over short time periods, it’s essential to base your decisions on a long-term average level of one month or more. That’s why you should measure at least one month before deciding to take action and the cumulative or 1 year average is the best indicator of how much radon you are being exposed to in your home.

Short-term averages are snapshots while long-term averages give you a fuller picture of how much radon you are exposed to in the space you’re monitoring.

Don’t panic - radon does not pose an immediate risk

It’s natural to be concerned if you start monitoring radon and quickly see high levels. But remember that the risk radon poses if over a long time of frequent exposure to high levels. It’s worth the time it takes to build a more complete picture before you decide if action is needed.

Recent trends are shown in the short-term averages

The short-term averages of 24H and 7D are updated every hour with the data from the most recent sample. These averages can give you a picture of how radon levels have changed recently.

Testing a mitigation action? Because radon is measured in averages, changes are not reflected immediately in the 24H average level. It will take a full 24 hours from the time of taking a mitigation action until the latest 24H average will show how much of a difference it made.

💡 Use the 24H and 7D radon averages to evaluate what impact actions, like opening windows or using a fan to increase ventilation, have on radon levels. You can also look at the 3H graph in the app to see the short-term impact.

How do I know it’s accurate?

Your Corentium Home 2 uses the same Airthings proprietary radon sensor used in our professional devices in use by thousands of radon professionals. Not only do our sensors have an extremely low failure rate but testing has shown them to maintain reliability over years of use with almost imperceptible drift.

That said, damage can occur so here are some symptoms of a possibly malfunctioning sensor:

• Radon level stays at either 0 or 10000
• In the app, the radon graph is empty
• Wild (huge) variations from one day to the next (i.e. 2.1 pCi/L one day, then 120 pCi/L the next)

If you are experiencing any of these, contact support@airthings.com.

• Version: BLE network interface (v5.2)
• Device Information Service: Service providing basic information about the device's identity, hardware, and software.
• Device Configuration Service: Service for reading and changing the device's configuration, some of which is only allowed for authenticated parties.
• Firmware Update Service: Service for updating the firmware of the device.