CALL OUR TEAM NOW 0800 612 6537 Lines open today 8am - 6pm

Mains Powered Carbon Dioxide (CO2) Monitor - Siterwell

Please register your interest below if you would like to be contacted when this product becomes available.

Register your interest
Product Overview

This CO2 monitor from Siterwell continuously measures the concentration of carbon dioxide (CO2) in the air around you. A clear and easy to read display shows the current CO2 level and uses simple 'traffic light' coloured LEDs to prompt you to ventilate the room. Additional features such as temperature and humidity readings allow you to monitor these conditions too, all in one device.

  • Suitable for installation in your classroom, office, or even your home
  • Powered: Mains via 5V DC adapter (included) with back-up battery
  • Back-up battery: Sealed rechargeable battery for 12 hour backup
  • Product life: 10 years
  • Clear LED indicators for air quality
    • Good = Green
    • Normal = Yellow
    • Poor = Red
  • Product expiry shown clearly with "End" on display screen
  • Continuous domestic air quality monitoring
    • CO2 (carbon dioxide) level: 400 to 5,000ppm (parts per million)
    • Temperature: choose between Celsius and Fahrenheit
    • Humidity: from 0% to 99.9% relative humidity
  • Discreet design with minimal footprint, suits any room:
    • Dimensions (HxWxD): 99 x 99 x 37mm
  • Adjusts to ambient light levels with adaptive display
  • Suitable for free standing or wall mounting with back cover serving as mounting plate
  • CE and UKCA marked
CO2 and You

What is Carbon Dioxide?

Carbon Dioxide is a gas that occurs naturally in the environment at low concentrations, and is often referred to by its chemical symbol "CO2". It is also produced industrially at high or even pure concentrations for a wide range of uses - manufacturing, production of other chemicals, fire extinguishers and, its most commonly known use, making fizzy drinks. Animals breathe in oxygen and breathe out CO2. Plants do the oppsite, absorbing carbon dioxide and expelling oxygen.

It becomes a poisonous gas when there is too much of it in the air you breathe. Exposure to higher concentrations of CO2 can cause headaches, dizziness and tiredness. Too much carbon dioxide can be fatal even when there is plenty of oxygen. In most everyday circumstances such as the home, office or at school, dangerous levels are not likely to be encountered but they can still reach a point where effects become noticeable if ventilation is poor. This is an even greater risk the more people there are in the room. In this way, the amount of CO2 in the air is a very good indicator of whether or not you have enough 'fresh' air.

Improving air quality in the classroom, the office or the home is mostly a matter of knowing when to open your windows. Better ventilation is now known to reduce the chances of picking up or passing on airborne infections like coronavuris. If the level of CO2 in the room increases, it is certain that any airborne viruses will be at higher levels too. With a CO2 monitor in your room it is possible to learn, and more importantly act, when it is time for a little more fresh air.

Technical Data
Product Code SWDMCO2
Brand Siterwell
Back-Up Battery

Type: Sealed rechargeable lithium-ion

Duration: 12 hours

Dimensions (HxWxD)

99 x 99 x 37mm

Measurement Range

CO2 (carbon dioxide): 400 ~ 5,000ppm

Temperature: 5 ~ 50°C (23 ~ 122°F)

Humidity: 0 ~ 99.9% relative humidity

Measurement Resolution

CO2 (carbon dioxide): 1ppm

Temperature: 0.1°C

Humidity: 0.1%

Power Supply

Mains adapter: 230V AC ~ 5V DC

Response time

CO2 (carbon dioxide): T90 < 120 seconds

Temperature: T90 < 120 seconds

Humidity: T90 < 600 seconds

Weight 0.27kg
Product Datasheets

Delivery Options

The following delivery options are available on this product.

Economy Delivery

£3.19 inc VAT - Orders will be delivered in 35-42 working days with Evri

Next Working Day Delivery

£6.19 inc VAT - Orders will be delivered in 35-42 working days with Evri

Looking for more information?

If you have any questions or would like more information about this product you can ask one of our specialists.

Live Chat Available Now
Direct Telephone 01507 464182


Colour Scheme


Pricing Display



By continuing to browse this site you agree to the use of cookies.