How to Replace a Smoke Detector (with Pictures) - wikiHow
Smoke Alarms for Home, AEGISLINK Mini Smoke Detector with 10-Year Battery, Fire Alarm with Test/Silence Button, Complies with EN 14604, S500 (Independent), 3-Pack : Amazon.co.uk: DIY & Tools
How to install our smoke detectors onto your ceiling - DIY is so easy and save big $$$ - Interconnected Smoke Alarms Queensland