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KiddeK7CO

Name: Kidde K7CO
Brand: Kidde
SKU: WH18639-0030-01

£18.99View retailers

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£18.99Amazon Marketplace UK

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The Kidde K7CO carbon monoxide (CO) alarm is battery powered and it needs a couple of replaceable or rechargeable AAs. The batteries should last for around a year before they need to be replaced and the alarm has been built to detect CO for 10 years. The K7CO used coloured flashing LEDs and chirps to let you know when the batteries are dying, as well as when the alarm has reached the end of its natural life. To find out how reliably it’s able to detect CO, we tested it in 28 different killer gas scenarios. Carry on reading for the full results of our tests of this Kidde battery-powered CO alarm.

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Aug 2023Last checked by Which?
Aug 2023First reviewed by Which?
May 2016Released

The overall Which? test score is made up of the following star ratings, all determined by our rigorous lab tests.

How we test carbon monoxide detectors

27 Feb 2024

Carbon monoxide (CO) detection

How we test carbon monoxide (co) detection

Five stars means that the CO alarm detected CO in every one of our tests. One star means that the alarm failed to detect CO in one or more of our CO detection tests. We test each carbon monoxide (CO) alarm more than 30 times to see whether it can detect the deadly gas. We test with low concentrations of CO and higher concentrations. We also test with a catastrophically high concentration of the gas. We check whether the alarms respond in time and whether after detecting CO, they can go on to continue to detect the gas.

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