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A 10 year battery and smartphone alerts for complete protection – the Netatmo Smart Smoke Alarm - YouTube
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Amazon.co.uk:Customer reviews: Netatmo Smart Smoke Alarm, 10-Years Battery life, Connected Smoke, Self-Testing, No Hub Necessary, Conforms to EN14604, NSA-UK,White,11.5 x 11.5 x 4.4 centimetres
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