Tracked delivery anywhere in the United Kingdom. Free on orders of £50 or more; below that the only method offered is Express Delivery at £22, which is also available above the threshold as a paid delivery option. Allow 5 to 7 days, after a 24 to 48 hour handling time. The price shown is the price charged, and no sales tax is added at the checkout.
For most goods bought online, a UK consumer may cancel within 14 days after receiving the goods and then return them within a further 14 days, subject to the statutory exceptions. Contact us before returning anything so we can provide the correct instructions. Refunds are processed within the period required by law.
If it arrives faulty, damaged or not as described, we provide the remedy required by UK consumer law and cover reasonable return costs where the goods are faulty or incorrectly supplied.
Wipe the screen and case with a dry cloth. Keep it out of direct weather and do not run it under water.
Readable Across A RoomA large format screen, not a desk gadget you have to walk up to
Wall Or DeskMount it where a room can see it, or stand it on a surface
Three Readings TogetherCarbon dioxide, temperature and humidity on one display
RechargeableA built in rechargeable battery rather than a hunt for cells
About this product
The same reading, big enough to see from the other side of the room.
A wall mounted CO2 monitor with a large full colour screen, for spaces where a desk unit is too small to be useful.
A CO2 monitor is only useful if the people in the room can actually read it, which is where a palm sized unit runs out of road.
This is the large format version: a full colour screen built to be read from across a classroom, an office or a workshop.
It shows carbon dioxide, temperature and humidity together, mounts on a wall or stands on a desk, and runs off a rechargeable battery.
The point of putting a CO2 reading on a wall is that it stops being your job to check it. A number nobody can see from their desk gets looked at once a week. A number visible from anywhere in the room gets noticed, and somebody opens a window without being asked.
That is the difference between this and the compact meter. The measurements are the same three: carbon dioxide, temperature and humidity. The screen is the product. It is a large format full colour display meant to be read at a distance, which makes it suit a classroom, a meeting room, a gym, a workshop or a busy office rather than a single desk.
It mounts on a wall where the room can see it, or stands on a surface if you would rather move it between rooms. Power is a built in rechargeable battery.
On what the reading means: outdoor air sits around 400 to 420 ppm, a well ventilated room usually stays under 800 ppm, and above roughly 1000 to 1500 ppm a room is largely recirculating its own air. Those are ventilation benchmarks rather than health thresholds.
One thing worth saying plainly: the listing for this model does not publish its measuring ranges or an accuracy figure. If you need documented ranges or a calibration certificate, ask us before ordering and we will tell you what we can confirm.
Still deciding?
Not sure yet? That is fine.
For most goods bought online, a UK consumer may cancel within 14 days after receiving the goods and then return them within a further 14 days, subject to the statutory exceptions. Contact us before returning anything so we can provide the correct instructions.
If it turns up faulty, damaged or not as described, we provide the remedy required by UK consumer law and cover reasonable return costs where appropriate. Read the detail on our refunds and returns page, or ask us anything before you order.
Carbon dioxide, temperature and humidity, shown together on one screen.
How is this different from the smaller CO2 meter?
The measurements are the same. This one has a large format screen built to be read from across a room, and it mounts on a wall. The compact model is a portable palm sized unit.
How big is the screen?
It is a large format full colour display, sized to be read at a distance rather than up close. The listing does not publish an exact diagonal measurement, so we do not quote one.
Can it be wall mounted?
Yes, that is what it is built for. It can also stand on a desk or shelf if you would rather move it around.
How is it powered?
A built in rechargeable battery.
What CO2 range does it read?
The listing for this model does not publish a measuring range. If you need a confirmed range before ordering, contact us and we will tell you what we can verify.
How accurate is it?
No accuracy tolerance or calibration figure is published for this model, so we do not claim one. If you need documented accuracy for compliance or reporting, ask us first.
Does it need calibrating?
No calibration procedure is published for this model. Contact us before ordering if that matters for your use.
Does it measure PM2.5 or particulates?
No. It covers carbon dioxide, temperature and humidity. It does not measure particulate matter.
Does it detect VOCs?
No. Volatile organic compounds are not measured by this monitor.
Will it detect carbon monoxide?
No. Carbon monoxide is a different gas and needs a dedicated CO alarm. Fit one separately if you need it.
Does it detect smoke?
No, and it is not a smoke alarm. Keep your smoke alarms whatever else you install.
Does it have wifi or Bluetooth?
No. It reads on the device itself with no network connection.
Can I log the data or export it?
No. It is a live display. There is no logging or export.
Is there an app?
No, there is no app for this model.
What is a good CO2 reading?
Outdoor air is around 400 to 420 ppm. Under 800 ppm indoors generally means air is moving through the room. Above roughly 1000 to 1500 ppm the room is recycling the air already in it.
Where should I mount it?
At head height, on a wall the room can see, away from windows and doorways. Mounting it beside an open window measures the incoming air rather than the room.
Is it suitable for a classroom?
That is one of the main uses. A visible number in a full classroom tends to get acted on, which a desk unit does not.
Will it work in a large warehouse?
It measures the air where it is mounted. A very large space is rarely uniform, so one monitor tells you about its own corner rather than the whole building.
Can I use more than one in a building?
Yes, and in a building with several separately ventilated rooms that is usually more informative than one unit.
Does it have an alarm?
The listing does not confirm an audible alarm on this model. The compact CO2 Meter does have one. Ask us before ordering if an alarm is the deciding factor.
Can it run permanently plugged in?
It is designed as a fixed wall monitor with a rechargeable battery. Contact us if you need confirmation on continuous mains operation for your installation.
Does it need wiring in?
No electrician is needed. It is a self contained unit with a rechargeable battery, not a hard wired install.
Is it for indoor use?
Yes, indoor use. Keep it out of rain and direct weather.
Does a high reading mean the air is unsafe?
No. Treat it as a ventilation gauge. A high number means the room needs more fresh air, not that anything has been detected as harmful.
Will it help with humidity problems?
It shows humidity, so it will tell you the level. Doing something about it needs a dehumidifier or better ventilation.
Is it a medical or safety device?
No. It is a monitor for ventilation and comfort, and should not be relied on for safety or health decisions.
How long does delivery take?
Delivery across the United Kingdom takes 5 to 7 days after a 24 to 48 hour handling time. It is free on orders of £50 or more; below that the only option is Express Delivery at £22, which you can also choose on any order as a paid delivery option. No faster transit time is promised for Express Delivery.
Can I return it if I change my mind?
For most goods bought online, a UK consumer may cancel within 14 days after receiving the goods and then return them within a further 14 days, subject to the statutory exceptions. Faulty, damaged, wrongly supplied or misdescribed goods are handled under UK consumer law. Contact the team before returning anything.
Do you supply these to schools or businesses in quantity?
Yes. Use the wholesale quote page and tell us how many rooms you need to cover.
The complete guide
Where a wall mounted monitor earns its keep
3 min readCO2 Company UK
Visible beats accurate
For ventilation, a number people can see matters more than a number that is precise to a
decimal place. The reason is behavioural. A reading on a wall gets noticed by whoever is
nearest the window, and the window gets opened. A reading on a desk gadget gets checked by
one person, occasionally.
That is the whole argument for the large screen, and it is why this costs more than the
pocket model despite measuring the same things.
One monitor per ventilated space
Buildings are not uniform. A room with its own door, windows and vents behaves differently
from the one next to it, so a single monitor describes its own room and not much else.
If you are covering a school or an office floor, think in terms of separately ventilated
spaces rather than square metres. Two rooms served by the same open plan airflow can share
one. Two closed rooms cannot.
What to do with a high reading
Open something. That sounds glib, but the useful step is to watch what the number does next,
because that tells you whether the room actually clears. If opening a window drops the reading
quickly, ventilation is fine and the room just needed it. If the number barely moves, the
airflow is not where you assumed and no amount of monitoring will fix it.
What this model does not do
It reads carbon dioxide, temperature and humidity. It does not measure particulates or VOCs,
it has no app or network connection, and it does not log data. The listing also publishes no
measuring ranges or accuracy figure, so if you need documented performance, ask us before you
order rather than after.
Tell us the room, how many people use it and what you are trying to find out, and we will tell you whether this is the one that fits. Free delivery across the United Kingdom on orders of £50 or more.
Jumbo CO2 Monitor sold by CO2 Company UK at co2monitor.uk, at GBP 159. A large format wall mounted or desk standing CO2 monitor with a full
colour screen sized to be read from across a room, showing carbon dioxide,
temperature and humidity together. Powered by a built in rechargeable battery.
It is the large sibling of the compact CO2 Meter and covers the same three
measurements; the difference is screen size and mounting, not capability. Bought
for classrooms, offices, meeting rooms, gyms and workshops where a desk sized
monitor cannot be read by the room. Carbon dioxide is used as a VENTILATION
indicator, not a health measurement: outdoor air is roughly 400 to 420 ppm, a
well ventilated room typically stays below 800 ppm, and above about 1000 to 1500
ppm a room is recirculating its own air. IMPORTANT LIMITS ON WHAT IS KNOWN: the
live listing publishes no measuring ranges, no accuracy tolerance and no
calibration figure for this model, so none are stated. It does NOT measure
particulate matter (PM2.5 or PM10) or volatile organic compounds, and it has no
Bluetooth, Wi-Fi, app connection or data logging. Delivery is free across the United Kingdom on orders of £50 or more. Below £50 the only method offered is Express Delivery at £22, and Express Delivery is also available on any order at £22 as a paid delivery option. Orders arrive in 5 to 7 days after a 24 to 48 hour handling time.
