S4 CO Dual Optical Heat Sensor / S4-901

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O2HCO - Dual Optical+Heat+CO Multisensor, a new concept in fire detection – a truly intelligent analogue sensor combining exceptional computing power in the sensor as well as the panel to achieve an extremely fast response to a real fire whilst minimising the risk of false alarms.




  • The multi-sensor combines heat (H), carbon monoxide (CO), optical forward scatter (OFS) and optical backward scatter (OBS).

  • The patented dual angle optical scatter technology allows identification of the particle source filtering potential false alarms due to steam and dust.

  • The gas sensing element (CO) within the chamber monitors the concentration of carbon monoxide, a product of incomplete combustion in some fire types, and potentially life threatening.

  • The CO sensor allows rapid fire detection, with smouldering fires, in areas where smoke detectors could register false alarms.

  • Combined CO gas sensing with dual angle optical and heat allows a higher level of false alarm immunity whilst still improving the detection speed of certain types of fire.


£59.26 ( £71.11 Incl. VAT)
Availability: In Stock

O2HCO - Dual Optical+Heat+CO Multisensor, a new concept in fire detection – a truly intelligent analogue sensor combining exceptional computing power in the sensor as well as the panel to achieve an extremely fast response to a real fire whilst minimising the risk of false alarms.

  • The multi-sensor combines heat (H), carbon monoxide (CO), optical forward scatter (OFS) and optical backward scatter (OBS).
  • The patented dual angle optical scatter technology allows identification of the particle source filtering potential false alarms due to steam and dust.
  • The gas sensing element (CO) within the chamber monitors the concentration of carbon monoxide, a product of incomplete combustion in some fire types, and potentially life threatening.
  • The CO sensor allows rapid fire detection, with smouldering fires, in areas where smoke detectors could register false alarms.
  • Combined CO gas sensing with dual angle optical and heat allows a higher level of false alarm immunity whilst still improving the detection speed of certain types of fire.

Delivery Options & Costs

  • Standard Delivery = £10
  • Next Day Delivery = £20
  • Next Day Pre 12.00pm = £22
  • Next Day Pre 10.30am = £26
  • Next Day Pre 9.00am = £32

Orders must be placed before 12pm Mon - Fri (excluding bank holidays and weekends).

Standard Delivery - 3 Working Days

Items not in stock on orders under £100 Standard Delivery is only available, for further requirement please contact us.

Deliveries can only be made to UK mainland addresses.

All deliveries on behalf of Scutum Direct must be signed for by the person placing the order or their agent, and goods can only be delivered to the address stated on the order.

All delivery charges are clearly stated on checkout. If you wish to order multiple items then delivery may be reduced, please contact us.

Scutum Direct will confirm delivery date by e-mail. It is the customer’s responsibility to ensure they, or their appointed agent, is available to receive delivery.

Do not sign for goods that appear to have been damaged in transit. Once you have signed you are accepting all responsibility.

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