FireAngel Carbon Monoxide Detector Alarm - The Stove Site
7 Year Carbon Monoxide Alarm (battery)
Scondaor Carbon Monoxide Alarm Detector EN 50291 Certified, CO Alarm Detector with Digital Display, Battery Powered, 10 Year Sensor : Amazon.co. uk: DIY & Tools
Bellman Visit CO Alarm - AmplifiedTelephones.co.uk