CO2 sensor

SKU: C02 Sensor
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Product Specifications

Theben CO2 sensors monitor CO2 levels in schools and classrooms, in offices and meeting rooms or in passive and low-energy buildings. CO2 sensors thereby make a decisive contribution to indoor air quality.
This site contains comprehensive information on CO2 levels in indoor air and their effects as well as needs-driven and energy-efficient ventilation control using CO2 sensors.


  • Mobile COsensor with USB cable for measuring air quality
  • Suitable for schools/nurseries, offices, conference or meeting rooms and living spaces
  • The device warns optically via the LED traffic light system in case of a potentially dangerous COconcentration – so ventilation can be optimized immediately and a healthy room climate can be created
  • Green threshold value: Up to 1,000 ppm CO2, hygienically ok, everything is in the green range!
  • Threshold value orange: Up to 2,000 ppm CO2, hygienically noticeable, Aeration – good idea!
  • Threshold value red: Over 2,000 ppm CO2, hygienically unacceptable, Ventilation is an absolute must!
  • Fresh air must be supplied and the used air removed at latest when the red threshold value is reached
  • Includes USB cable for easy setup
  • Stand and non-slip pad included, alternative wall mounting is also possible
  • Development based on the recommendation for COin indoor air of the Federal Environment Agency according to various guidelines, e.g. the Bavarian “Guideline for the Promotion of Investment Costs for Technical Measures for Infection-Protection-Compatible Ventilation in Schools (FILS-R)
  • Delivery Details

    Ennis Electrical delivers Nationwide

    Store Collections

    Products purchased online can be picked up in Store. Please select the ‘Pick-Up in store’ option during checkout.


    The following is required upon collection:

    • Confirmation e-mail, that product is available for collection


    Delivery is only available in the Republic of Ireland

      • Delivery cost of a large appliance is €10 for Clare – €30 rest of Ireland
      • Delivery cost of an American Fr/Frz is €30 for Clare – €60 rest of Ireland
      • Delivery cost of a small appliance is €10 for Clare – €10 rest of Ireland


    We aim to deliver large appliances within 7/10 working days (subject to availability). We aim to delivery small appliances within 5 working days (subject to availability).

  • Return Policy
    • When you purchase online you have a statutory right to return unopened goods (other than perishable or customised) up to 7 days after receiving your order: this is the cooling off period.
    • We can change or cancel an order up until it is dispatched. If the order has been dispatched, you can return the unopened goods to us and we will organise a refund (excluding delivery cost). Memory cards and software must be in their sealed packaging.
    • The product must not have been used or installed or had any data inputted. In addition to this cooling-off period, you can return any item unopened and in its original packaging within 28 days of receipt for credit or exchange. We can change or cancel an order up until it is dispatched. If the order has been dispatched, you can return the goods to us and we will issue a credit or exchange (excluding delivery cost).
    • Exceptions to this are goods which are made to your specifications – ie special order
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