CO2 Detector | Portable CO2 Meters | Office Carbon Dioxide Meter

0 to 5000ppm. That is wider than an office normally reaches, which is useful, because the top of the range is exactly where a badly ventilated room ends up.

This store's own guidance cites 800 ppm as the point to open a window or increase ventilation. We would rather give you that number and let you judge than pretend there is a single correct answer for every room.

Temperature and humidity, on the same 3 in display. The three together tell you more about a room than any one of them does.

Yes, it weighs 0.24lb, so carrying it between rooms to compare them is realistic rather than theoretical.

No. It is a measuring instrument that displays a number. It is not a carbon monoxide alarm, not a fire detector and not a substitute for either.

It tells you the carbon dioxide concentration. What that means for a particular room is a judgement, and if you have a genuine air quality concern in a workplace that is a question for a professional rather than a desk meter.

Because people breathe out CO2 and the meter is doing its job. A reading that responds to the room filling up is a working meter, not a faulty one.

At about seated head height, away from a window, a door and a vent. Next to an open window you are measuring the outside.

Same measurement job, different form. This one is the portable 0.24lb unit with a 3 in display for a desk. The other is the large-display model meant to be seen from across a room.

Follow the instructions in the box for the model you receive. The general rule with CO2 meters is that a spell in fresh outdoor air is what resets their baseline.

Yes. A bedroom overnight is the reading that surprises most people, and it is a room you can do something about.

Check the instructions supplied with your unit for the power arrangement, as we would rather point you at the box than state something the product listing does not.

Yes, this one is picked and packed from our own warehouse stock.

Parts per million. A reading of 800 ppm means 800 molecules of carbon dioxide in every million molecules of air.

Delivery is free on orders of £75 or more. Below that it is a flat £25, whatever you order. There is nothing extra added at the end.

5-7 days, after a 24-48 hour handling time. The handling time is the bit before it leaves us, and the 5 to 7 days is the delivery itself.

Not at the moment. Every order goes out on the same tracked service, 5 to 7 days across the UK after the handling time. If you need something by a particular date, email us before you order and we will tell you honestly whether it is possible.

Yes, right across the United Kingdom. We are an online supplier with no shop or showroom, which is how the pricing works.

It is picked and packed from our own warehouse stock. Either way it comes to you with tracking, and you get the tracking number by email once it is on its way.

Yes. You have 14 days to change your mind under the Consumer Contracts Regulations 2013, and we extend that to 15 days under our own policy. Return postage is yours unless the item arrived damaged or faulty, in which case we cover it.

Tell us and we will sort it. Under the Consumer Rights Act 2015 goods have to be of satisfactory quality, fit for purpose and as described, and if they are not that is our problem to fix, not yours to pay for. Email theteam@customersupport.care with a photograph and your order number.

You get an emailed receipt as soon as payment goes through, and a second email with the tracking number once the order ships.

Card payments through our checkout and PayPal. Card details are handled by the payment provider and never stored by us.

Pounds sterling. Every price on this site is the price you pay in £, with no currency conversion at the end.

Yes, `valued-customer` takes 15 percent off your goods at the cart. It applies to the products rather than to the delivery.

No. We are an online supplier with no physical shop or showroom, and that is deliberate: the saving goes into the price rather than into a lease.

Yes, and if you want more than a handful use the wholesale quote page and we will price it properly rather than making you add them to the cart one at a time.

Email theteam@customersupport.care and a person will answer you. We would much rather answer a question first than process a return after.

Home Office Company UK, a division of Caruso Consulting Co Ltd. Our UK administration office is at 33 Queen St, London EC4R 1AP. The company details are on every legal page rather than buried.

The checkout runs over an encrypted connection and we never see or store your card number. If anything about a payment looks wrong to you, email theteam@customersupport.care and we will look at it with you.