Sensio Air for classrooms and schools

The air in every classroom, measured where children breathe it.

Children spend most of the school day indoors, in rooms whose air almost nobody measures. Sensio Air is a small optical sensor that goes on a ceiling, in a wall socket or on a shelf and watches the room all day. It tells teachers, parents and the front office what is in the air, and tells the building what to do about it.

Book a call with our team See what it measures

Ø70 × 36 mm · Wi-Fi · BACnet/IP and API · 17 granted patents

One sensor per room

What it watches in each room

CO₂Climbs as a full room breathes. The clearest sign a class needs fresh air.

VOCsVapours from cleaning products, paint, glue and new furniture.

MoldSpores identified as they appear, down to the species.

PollenGrass, tree and weed pollen drifting in through open windows.

Dust mitesFragments in the air, a common trigger for allergies and asthma.

Pet danderCarried in on clothes and school bags.

TemperatureComfort, and an early sign that heating or cooling is struggling.

HumidityToo damp and mold grows. Too dry and eyes and throats complain.

On the ceiling

In a wall socket

On a shelf

It needs power and Wi-Fi. There are no samples to collect, no reagents and nothing to refill.

In the classroom

A room that helps children think.

A closed classroom fills with CO₂ in the space of one lesson. Research on indoor air finds that thinking measurably slows once CO₂ passes about 1,000 ppm, well before anyone says the room feels stuffy. Sensio sees the climb as it happens, so a window opens or the ventilation steps up while the lesson is still going. Read our indoor air white paper.

Focus: CO₂ followed through every lesson, with a nudge before it reaches the level you set.
Allergies and asthma: Pollen, mold, dust mites and dander identified as they arrive, so staff know which rooms to air or clean before symptoms start.
Comfort: Temperature and humidity held where children can concentrate.
Parents: A short note on a parent's phone that says the classroom is healthy. A little reassurance, wherever they are.

CO₂ in one classroom over a school dayppm

An illustration of a typical day, not measured data. Shaded bands are lessons. CO₂ climbs through the first lesson, the ventilation steps up as it reaches the limit, and the later lessons stay under it.

Across the school

Every room on one screen. One message when something needs doing.

The front office sees the classrooms, the library, the gym and the canteen together, with the history behind each one. Nobody has to sit and watch it. Alerts go out by email, Slack or text, and a single text says which rooms to check and what for.

Dashboard: Live status for every room, and how it got there.
Reports: Scheduled PDF summaries for the head teacher, the board or the facilities team.
Sensio AI: Ask it in plain words, or let it report in when it has done something.
Access: Role-based access and two-factor sign-in. Readings travel encrypted.

School overviewExample school

12of 12 rooms healthy. CO₂ shown in ppm.

Sensio AIHey John, classrooms are healthy today. We activated ventilation in 4C as CO₂ buildup was interfering with student focus.

Example figures. Each tile is one room with its own sensors.

Chemicals in the air

Know what the cleaning, the paint and the new furniture left behind.

Volatile organic compounds come off cleaning products, paints, adhesives, air fresheners and new furniture. In a closed room they build up overnight and are still there at first bell. Sensio follows the VOC level around the clock, so you can see a spike, find what caused it and air the room before children walk in.

After cleaning: See that a room has cleared before it is used.
After building work: Follow a repainted or refurnished room day by day until it settles.
Choosing products: Compare cleaning products by what they actually leave in the air.

Sensio reports the total VOC level in a room. It does not name individual chemicals.

VOC level in one classroom, overnightLevel

An illustration, not measured data. The evening clean pushes VOCs up, they fade slowly in the closed room, and an early ventilation purge clears them before first bell.

Maintenance and cleanliness

Clean and repair the rooms that need it, not the ones next on the rota.

Dust, dander and mite levels show which rooms are due a deep clean and whether the last one worked. Humidity that stays high while mold spores start to appear points to a leak or a cold wall weeks before a stain does. A room that never quite reaches temperature points to the heating plant, not the thermostat.

Mold, caught early: Spores identified live and resolved to five species, where a lab plate takes two to three days.
Cleaning you can check: Allergen levels before and after, room by room.
Plant problems: Temperature and humidity drift that shows heating or ventilation falling behind.
The sensor itself: Factory-calibrated. No samples, no reagents, nothing to refill.

Rooms to check todayExample

3C
Inspect the window wallHumidity high for three days, mold spores rising.
Check
Gym
Deep clean dueDust up since Monday.
Check
4A
Check the radiator valveSlow to warm each morning.
Check
9 others
Nothing to doAll readings in range.
Clear

An example of the daily list. Three rooms need someone; nine do not.

Building automation

The building responds on its own.

Sensio speaks BACnet/IP and has an open API, so its readings go straight into the building management system you already have. When CO₂ builds in Room 4C, the ventilation for 4C steps up, and steps back down when the air clears. Nobody has to notice, and nobody has to remember to turn it off.

BACnet/IP: Mapped into your building system by our team.
Cloud API: For timetabling, displays and your own tools.
Rules you set: Limits per room type. Alerts go to people, to the building, or both.

What happens when a room fills upExample

Room 4CCO₂ 1,120 ppmOver the limit you set

SensioFlags the roomWithin minutes

Building systemGets the readingOver BACnet/IP

Ventilation4C steps upOnly that room

A little later: 640 ppm in 4C, and the ventilation steps back down.

Example readings. The loop runs without anyone watching it.

Electricity

Run the fans for the air, not for the clock.

Most schools ventilate on a timetable: every room, all day, whether it holds thirty children or none. With a live reading in each room, fans, heating and cooling can follow what is actually happening. More air for a full classroom, less for an empty one, none for a hall nobody is using.

On demand: Ventilation tied to the CO₂ in each room instead of a fixed schedule.
Empty rooms: CO₂ settling back to outdoor levels shows a room has emptied, so the plant can ease off.
Proof: Before and after, in your own readings, room by room.

What this saves depends on your building and how it runs today. We work it out with you from your own data.

When one classroom's ventilation runsOne school day

On a timetable Runs all day

On demand Runs when the room needs air

07:0009:4512:3015:1518:00

An illustration, not measured data. On demand, the fan follows the lessons and stops when the room empties.

Want to learn more?

Book a call with our team. Tell us how many rooms you have and we will show you how it would work in your school.

Book a call with our team See plans