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Aico Ei146e Optical Smoke Alarm AC mains power supply and 9V alkaline battery back-up.: Amazon.co.uk: Electronics & Photo
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Aico Ei146E Mains Optical Smoke Alarm With Hush, 9V Alkaline Battery Back Up- Replaces Ei146RC 240V - Shop4 Electrical
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Aico 230v mains powered optical smoke detector with rechargeable battery backup at UK Electrical Supplies
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