FA3820

Carbon Monoxide Alarm

10 Year Lifetime Battery

Looking for a CO-9X alarm replacement? With the latest sensing technology, a clear loud alarm and BSI Kitemark approval, the FA3820X4 offers the highest level of CO detection for your home and replaces end-of-life CO-9X alarms.

Kitemark

Third party tested and approved.

5 Year Warranty

For peace of mind.

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FA3820X4

Resources

To ensure you install the right alarm for your home, and one that's compliant with your local carbon monoxide regulations, review our manual and data sheet or get in touch with our customer service team.

Manual

Installation Support and Guidance

Datasheet

Specification Detail and Standards

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FA3820X4

Set-Up

The FA3820X4 alarm cannot be interlinked to other alarms in your home, but still offers the highest protection. Follow the installation guides to ensure this alarm is fitted correctly.

Testing Support

Testing and maintenance support.

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Enhanced CO sensing Fast reaction to rising CO levels

Intelligent CO sensing technology enables the alarm's high sensitivity mode to be activated if it predicts CO levels will increase to or above 180ppm for a quicker alert.

Fast reaction to rising CO levels
Battery powered protection 10 year battery included

The alarm comes with a sealed, tamper proof battery that will last the lifetime of the alarm. The sensor within the unit will deteriorate after 10 years, so to ensure you're protected, we recommend you replace the unit after this time.

10 year battery included
Sleep Easy Enjoy a peaceful night's sleep

Give yourself vital time to replace your alarm, by silencing low battery warnings for 8 hours.

Enjoy a peaceful night's sleep

Did you know?

Alarm memory indicates previous activation Discover more

With the alarm memory function, a red LED will flash to let you know with a visual indication that there has been a previous CO alarm activation within the last 30 days.

Discover more
Complete the range…

FAQ's

A Carbon Monoxide alarm is the only way to receive an audible alert to the presence of Carbon Monoxide (CO) in your home, or whilst you’re away on holiday.

CO is a gas which cannot be seen, tasted or smelt but can result in CO poisoning and illness or in some cases death. It’s created in our homes when the fuel in products, such as boilers, fires and ovens does not burn completely. Regular servicing of these products can reduce the risk of CO being present but it cannot completely remove the risk.

Carbon Monoxide is produced when fuels burn incompletely – this could be from a boiler, gas fire, oven, log burner or a blocked flue or chimney. It can also travel through walls from adjoining properties, so as well as having an alarm next to appliances in your property we would also advise you have one in living spaces and bedrooms.

To help prevent a Carbon Monoxide leak we advise getting your appliances regularly serviced by reputable engineers who are gas safety registered.

When a Carbon Monoxide alarm is triggered, it will emit an alarm sound consisting of 4 loud beeps and a break repeated until the sensor is clear of Carbon Monoxide gas.

Yes – the FireAngel Pro Connected FP1820W2-R Carbon Monoxide Alarm, when paired with a Smart Gateway, will allow you to review alerts and easily test the alarm from your phone.

The common sources of Carbon Monoxide (CO) are cookers, fires, boilers, oil and gas boilers, portable generators, oil or solid fuel cookers, gas or paraffin heaters, barbecues (BBQs), clogged chimneys, wood or gas fireplaces, cigarette smoke or any fossil fuel-burning appliances.

Regular servicing of these items will help reduce the risk of CO in your home but it will not completely remove the risk. The only way to detect CO in your home is to install a Carbon Monoxide detector with an audible alarm.

Yes – this carbon monoxide alarm is suitable for all domestic settings, including caravan holiday homes, caravans, motor caravans and boats.

A quiet self-test allows you to ensure your alarm is working, without disturbing anyone else with a loud alarm.

A single press of the test button will perform a quiet self test, with the alarm volume at least 10dB below the full volume of your alarm.

A double press of the test button will perform a self test at full alarm volume (85dB@3M).

From October 1st 2022, the law is changing surrounding carbon monoxide alarms in rented properties – for both the private and social sectors.

Your landlord will need to ensure as a tenant you have a working carbon monoxide alarm 1-3 metres away from any fuel burning appliances in a room (excluding gas cookers) and that any faults or repairs are carried out on the alarm in a timely manner. For more information, read this blog.