The First Alert SCO5UK Combination Alarm has separate audible warnings and LEDs to indicate either smoke or carbon monoxide (CO). The Smoke and CO sensors operate independently for quick detection and has a loud 85 dB warning when activated. It also features a test and hush button feature. 

CE marked and tested to BS EN 14604. Comes with a 7 year manufacturer's warranty.

Powered by 2 x AA Batteries (supplied).