Lifesaver Carbon Monoxide Alarm Twin-Pack, £9 at Homebase
Lifesaver Smoke Alarm
Kidde K5CO Carbon Monoxide Alarm, Ten Year Alarm Sensor Life, AA Battery Powered (Replaceable) : Amazon.co.uk: DIY & Tools
PSA Products - We have expanded our range of home safety products with the LIFESAVER LIFCO9D Battery Carbon Monoxide Alarm and the LIFCO240 Carbon Monoxide Alarm! The latest in carbon monoxide alarms