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KiddeK5CO

Name: Kidde K5CO
Brand: Kidde
SKU: WH18639-0028-01

£17View retailers

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£17Amazon Marketplace UK

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The Kidde K5CO battery-powered carbon monoxide alarm is powered by two AA batteries. The batteries should be changed annually, and the alarm will chirp and an LED will flash when they need to be replaced. Another LED flashes green every 30 seconds to show the alarm is active and in a CO incident, along with the loud alarm sounding, a red LED will flash. The alarm has been designed to last for 10 years and comes with a seven-year warranty. To find out how effective it is at detecting CO and raising the alarm, we put this alarm to the test. Read on for our results and review of this Kidde battery-powered CO alarm.

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Aug 2023Last checked by Which?
Aug 2023First reviewed by Which?
Sept 2019Released

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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