Compact Indoor Air Quality Sensor | CO2, Temperature and Humidity
Compact Indoor Air Quality Sensor | CO2, Temperature and Humidity
Please confirm your size using the provided ring sizing chart further down the page
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CO₂ Is an Important Indicator for Indoor Air Quality
CO₂ (carbon dioxide) is a common compound existing in the air. Human breath usually is the main source of CO₂ increase in indoor environments. When the CO₂ level is high in a small space such as a classroom or an office, people will feel drowsy.
A higher CO₂ level usually indicates that the space is in poor ventilation, which might lead to the accumulation of other pollutants such as VOCs, and the risk of airborne virus infection also increases.
| CO ₂ Sensor | |
| NDIR CO₂ Sensing Technology | |
|
Range
|
400 ~ 9999 ppm
|
|
Typical Accuracy
|
±15% of m.v.
|
| Temp & Humidity Sensor | ||
| Temperature | Humidity | |
| Range | -20 ~ 50°C | 0 ~ 99%RH |
| Resolution | 0.1℃ | 1% |
| Typical Accuracy | ±0.5℃@0 ~ 50℃ | ±5%RH@10% ~ 90%RH |
Sizing Tip
When measuring your finger circumference, ensure that the string is snug around the the widest part of the finger you intend to wear the Rune.
FAQs
Unsure about sizing?
Note: For the best results, please use a thin, non-stretchy material, such as a piece of regular sewing thread or a thin strip of paper, as these closely mimic the fit of a ring. Thicker materials, like a shoelace, may lead to an inaccurate measurement because they can add extra bulk around your finger.
To find your correct ring size for the Rune, use a simple piece of string to measure your finger. Here’s how you can do it:
1: Wrap the String: Take a piece of non-stretchy string or a strip of paper and wrap it comfortably around the base of your finger, where the ring will sit. Make sure it’s snug but not too tight.
2: Mark the Spot: Mark where the string overlaps with a pen or marker.
3 : Measure the Length: Lay the string flat and measure the length from the end to the marked point in millimeters using a ruler.
4: Compare to Our Chart: Visit the product page on our website and refer to the US ring size chart. Match your measurement (in millimeters) to the corresponding US ring size listed there.
For the most accurate fit, measure your finger at the end of the day when it’s likely to be at its largest. If you’re between sizes, we suggest sizing up for comfort. If you have any trouble finding the chart or determining your size, feel free to share your measurement with us, and we’ll help you match it to the correct ring size!
Who pays import duties and taxes?
All goods are shipped from the closest possible warehouse (UK, USA or HK) and for customers based in Europe (Region 1), UK (Region 2), HK (Region 3), Canada (Region 4) and USA (Region 5), the price you see is the price you pay.
The price includes all applicable duties, taxes and other fees.
For customers outside of these five (5) regions we do our best to pre-pay all duties and taxes but if you have questions please contact customer service for additional information.
Wrong Size/ Free Returns
During the first 30 days if you are unsatisfied we offer a no questions asked FREE return. If you want to return your ring during this time please contact marketing@airguard.ai and they will arrange for the ring to be returned to us at no cost to you.
If for some reason you have ordered the wrong size, we allow for one free ring size exchange.
Free Shipping / Delivery Details
We offer Free Shipping to the following five regions - Europe, United Kingdom, Hong Kong, Canada and USA.
We ship your device within 5 business days from the purchase date and you receive a tracking number.
We ship using major shipping companies and national postal services.
Typically international shipments arrive between 5-15 days from the date of shipment in the destination country.
Warranty Information
The Rune Smart Wellness Ring comes with an industry-leading 3-year limited warranty. Details can be found here: Warranty
30-Day Money Back Guarantee
Not satisfied? Return it during the first 30 days if you are unsatisfied and we offer a no questions asked refund.
If you want to return your ring during this time please contact: marketing@airguard.ai and we will arrange for the ring to be returned to us at no cost to you.
How long does the battery last?
The Rune's battery typically lasts around 5 days on a single charge. With the charging case, it's possible to go off-the-grid for a long holiday as it provides enough power for 4 weeks.
Is it waterproof?
Yes, our Bionic rings are all safe to wear while showering, swimming and washing your hands. Please see Technical Specifications for more information.
Free Lifetime Software Updates
The Rune ring software is updated periodically and every buyer has access to these updates for life. This also includes switching the app or major updates.
Rune Smart Wellness Ring Set Includes
Every Rune Ring set includes a USB cable for direct charging, a charging case complete with carrying strap, and a User Manual.
It further includes a QR code to download the Android / iOS Smarthealth App to review the health data of the Rune ring.
Why buy from us?
We offer beautiful, unique, and functional health trackers that fit on a finger. We allow you to purchase risk free and offer the longest warranties and most flexible return policies in the business.
Our close relationships with designers and component makers allow us to provide you highest possible value for money because in product testing our devices compare favorably to Oura Ring and Whoop at a fraction of the cost.