Hi — I’m Mohamed, an embedded systems engineer based in Montreal, Canada.
For more than 5 years I’ve been designing low-power electronic devices and sensors professionally. I spend most of my days writing firmware, optimizing battery life, and working with microcontrollers.
Aeris didn’t start as a product idea.
It started as a small experiment at home.
I never planned to launch a company or sell a device. I simply wanted to understand something happening in our bedroom.
The moment that started everything
My wife and I kept noticing the same thing.
After spending some time inside the bedroom with the door and windows closed, we would feel tired, unfocused, and sometimes get headaches — even during the day.
At first we blamed sleep, screens, or just a long day.
But as an engineer, I got curious.
I suspected carbon dioxide (CO₂).
Humans constantly exhale CO₂, and in a closed room it can accumulate surprisingly fast. So I borrowed a professional CO₂ sensor and ran a simple test.
We stayed in the room for about 30 minutes with normal daily activity.
The result shocked me.
The CO₂ level kept climbing… and climbing… until I opened the ventilation.
Within minutes, it dropped back to normal.
It was the first time I could see the air quality changing in real time.
That’s when I realized something important:
Most of the time, we have no idea what the air we breathe actually looks like.
I discovered most “CO₂ monitors” weren’t actually measuring CO₂
Naturally, I looked online to buy a monitor for our home.
But I found something unexpected.
Many inexpensive air quality monitors don’t measure real CO₂.
They estimate it using something called eCO₂, calculated from VOC gases. The numbers look believable, but they are often inaccurate and slow to react to ventilation.
That explained why some monitors never showed major changes when windows opened.
For something directly affecting comfort, concentration, and sleep, I wanted a reliable measurement — not an estimate.
So I decided to build one myself.
So I built my own![]()
I selected a true NDIR CO₂ sensor — the same sensing principle used in professional instruments.
Then I started designing around it:
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ultra-low power electronics
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battery operation
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simple readable display
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no Wi-Fi tracking
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no phone required
The goal was clear:
I wanted a device you could place in a room and instantly understand if the air was good or bad.
Weeks turned into months of development, firmware tuning, and power optimization.
It was much harder than I expected
Building electronics is one thing.
Building a reliable consumer device is completely different.
I ran into many problems:
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sensors needed calibration
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batteries drained too fast
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enclosure airflow affected measurements
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display readability in sunlight
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manufacturing tolerances
I went through multiple prototypes, redesigned the PCB more than once, and spent nights debugging tiny issues that only appeared after hours of operation.
Every fix taught me something about how indoor air behaves in real homes.
Why I decided to share it
After I made a working unit, I showed it to friends.
They all had the same reaction:
They didn’t expect their rooms to reach high CO₂ levels so quickly.
Bedrooms, offices, and even cars with recirculation turned on could reach poor air conditions much faster than people think.
That’s when Aeris stopped being a personal project.
I realized many people would benefit from simply seeing their air.
Aeris is not meant to alarm you — it’s meant to inform you.
Sometimes all you need to do is open a window for a few minutes.
What you can expect
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Ships from Canada
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Designed and supported by the founder
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Real CO₂ measurement (not estimated eCO₂)
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No subscription, no app required
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1-year warranty
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30-day returns
A simple goal
I didn’t create Aeris to sell a gadget.
I created it to make an invisible part of daily life visible.
If you’re curious about the air you breathe, Aeris will show it to you.
— Mohamed
Founder, Aeris Technology
Montreal, Canada
Personal LinkedIn: https://www.linkedin.com/in/mohamed-djemai/
Aeris Instagram: https://www.instagram.com/aeris_tech/
Personal Instagram: https://www.instagram.com/mdjemai/