The 4 Best Basic Smoke Alarms of 2023 | Reviews by Wirecutter
Kidde KF20R Mains Powered Optical Smoke Alarm with Rechargeable Back-Up Battery | Safe Fire Direct
Kidde Optical Smoke Alarm, 2 Pack
HEIMAN 10 Year Optical Smoke Alarm Detector, 10 Year Life Battery Photoelectric Fire Alarm Smoke Detector with LED Indicator & Silence Button, Conforms to EN14604 Standard, 633PHS (1PCS) (633PHS-1) : Amazon.co.uk: DIY