Deta 1151 Mains Powered Ionisation Smoke Alarm with 9V Battery Back Up & Integral Base, TV & Home Appliances, Electrical, Adaptors & Sockets on Carousell
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Deta 1163 Optical Smoke Alarm 240V with 9V Replaceable Battery Back Up (White) : Amazon.co.uk: DIY & Tools
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BRK 770MBX Ionisation Smoke Alarm, Mains Powered with 9V Battery Backup, Push Fit Base : Amazon.co.uk: DIY & Tools
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