How to Replace a Smoke Detector (with Pictures) - wikiHow
Smoke alarms for home 5-YEAR-Battery Powered 10 years Life Optical Smoke Alarm Fire Smoke detector with LED Indicator for office 2pack : Amazon.co.uk: DIY & Tools
Kidde 10SCO Combination Smoke and Carbon Monoxide Alarm with Voice Notification : Amazon.co.uk: DIY & Tools
Will replacement alarms fit my old alarm's base and/or wire harness?
How to install our smoke detectors onto your ceiling - DIY is so easy and save big $$$ - Interconnected Smoke Alarms Queensland